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This paper describes the reference system for current sensor calibrations at power frequency and for wideband frequencies. The reference system is lately used for researches at PTB in the frame of two European projects: “IT4PQ - Measurement methods and test procedures for assessing the accuracy of instrument transformers for power quality measurements” and “WindEFCY - Traceable mechanical and electrical power measurement for efficiency determination of wind turbines”. The relevant standards of IEC61000 were used for the power quality related tests. The proposed calibration system was validated for current sensor calibrations with the expanded uncertainties (k = 2) below 20 μA/A and 10 µrad at 50 Hz up to 5 kA and 0.01 % and 0.04 crad for the frequencies up to 9 kHz. Additionally, a centring unit for the Rogowski coil improved the measurement uncertainty 10-fold.
", "identifiers": [ { "identifier": "10.1109/ICHQP53011.2022.9808745", "scheme": "doi" } ], "publication_date": "2022-07-01", "publisher": "Zenodo", "resource_type": { "id": "publication-conferencepaper", "title": { "de": "Konferenzbeitrag", "en": "Conference paper" } }, "rights": [ { "description": { "en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited." }, "icon": "cc-by-icon", "id": "cc-by-4.0", "props": { "scheme": "spdx", "url": "https://creativecommons.org/licenses/by/4.0/legalcode" }, "title": { "en": "Creative Commons Attribution 4.0 International" } } ], "subjects": [ { "subject": "Current sensor" }, { "subject": "power quality" }, { "subject": "Rogowski coil" }, { "subject": "reference" }, { "subject": "wideband" } ], "title": "Reference system for current sensor calibrations at power frequency and for wideband frequencies" }, "parent": { "access": { "owned_by": { "user": 96167 } }, "communities": { "default": "65c965c1-9822-4b82-8a1b-1eeb159d0612", "entries": [ { "access": { "member_policy": "open", "members_visibility": "public", "record_policy": "open", "review_policy": "open", "visibility": "public" }, "children": { "allow": false }, "created": "2021-07-25T10:20:49.403888+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "id": "65c965c1-9822-4b82-8a1b-1eeb159d0612", "links": {}, "metadata": { "curation_policy": "Uploads are accepted by the 19NRM05 IT4PQ project management
\r\n", "page": "This collection provides research outputs related to the 19NRM05 IT4PQ project "Measurement methods and test procedures for assessing accuracy of Instrument Transformers for Power Quality Measurements (1st August 2020-30 July 2023), co-funded by the European Union and the EURAMET member states.
\r\n\r\nThe project aims at developing the metrological framework for the traceable calibration of ITs to be employed for PQ measurements in electricity distribution grids.
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