Alvaro Espínola Posted January 23, 2017 Report Posted January 23, 2017 Does anyone have any vi of overcurrent protection? for substations? simulation only. Quote
hooovahh Posted January 30, 2017 Report Posted January 30, 2017 Does C++ have any overcurrent protection? C++ just like LabVIEW is software and overcurrent conditions is a physical issue. What do you really mean? Quote
Alvaro Espínola Posted January 31, 2017 Author Report Posted January 31, 2017 (edited) I am trying to simulate in LabView, an overcurrent relay of an electrical substation. I need to build the protection VI. Generate internally an overcurrent fault signal that can be compared to a Time-Current Characteristic Curve (IEC or IEEE), and then give a open-circuit signal. HELP! Edited January 31, 2017 by Alvaro Espínola Quote
hooovahh Posted January 31, 2017 Report Posted January 31, 2017 You didn't give much to go on, since I'm not familiar with IEC or IEEE Time-Current curves. So attached is some code that allows you to set the current and the Amp Hours are then calculated and if it goes over a limit then a boolean turns on. Overcurrent Test.vi Quote
agilentvee Posted August 19, 2019 Report Posted August 19, 2019 overcurrent?the function belong to DMM. you can remote the DMM, however, the labview have no the subvi which can monitor overcurrent Quote
Antoine Chalons Posted August 23, 2019 Report Posted August 23, 2019 NI offfers an electrical power toolkit : http://zone.ni.com/reference/en-XX/help/373375G-01/ Quote
gleichman Posted August 25, 2019 Report Posted August 25, 2019 (edited) Why post a critical remark to what looks like a homework question from 2.5 years ago? Acquiring electrical current data is not the challenge of this problem which is very doable with the correct hardware. The challenge is knowing when the current exceeds the "Time-Current Characteristic Curve". The curve defines for a given current level how much time passes before an over-current occurs. The higher the current the quicker the reaction time, but the shapes can vary. Edited August 25, 2019 by gleichman Quote
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