It is widely assumed that any unbalance between phase currents in 4-wire distribution circuits will equal the neutral current; that is that the sum of currents is zero. In practice, however, measurements made at distribution substations often show significant inconsistency. Several possible explanations for this are explored, showing that calculations of the voltage drop and losses are more accurate if harmonics are included. More generally, feeder configurations are described in which the currents may not sum to zero.
- Mechanical, Electrical and Manufacturing Engineering
- Centre for Renewable Energy Systems Technology (CREST)
Published in24th International Conference & Exhibition on Electricity Distribution
CitationURQUHART, A. and THOMSON, M., 2017. Resolving inconsistencies in three-phase current measurements. IN: Proceedings of 2017 24th International Conference and Exhibition on Electricity Distribution (CIRED 2017), Glasgow, Great Britain, 12-15 June 2017, paper no. 1267.
PublisherIET (© the authors)
VersionAM (Accepted Manuscript)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
NotesThis paper is a postprint of a transcript of a paper submitted to and accepted for publication in Proceedings of 2017 24th International Conference and Exhibition on Electricity Distribution (CIRED 2017), and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library in the form of a video.