Need and Objectives
This project addresses the need of the power transformer community represented in CENELEC TC 14 “Power Transformers” for metrology research on more accurate and reliable loss measurements of high-voltage power transformers and reactors.
Improved energy efficiency is one of the three targets of the EU 2020
Energy Strategy and a crucial theme in the whole energy chain from electricity
generation, transmission, and distribution to the end user. Even small
improvements in efficiency can have a large impact, for example when they are
made in devices that convert large amounts of energy such as grid power
transformers. Therefore, the Ecodesign Directive 2009/125/EC per 1 July 2015
requires all power transformer manufacturers to unambiguously prove that their
products comply with specific efficiency requirements.
Presently available industrial loss measurement systems (LMS) are limited in accuracy to 100 – 300 µW/VA, which is insufficient to cover the requirements of the EU regulation. Building on the results of the ELPOW project, the consortium will address this by developing new measurement systems for transformer and reactor loss measurements with an uncertainty of 50 µW/VA or better, together with reference setups required for the calibration of these systems.