| Zugriffsnummer | 49656 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | A two-stage voltage transformer for the full medium voltage range |
| Autor(in); Institution |
Liu, Hao; Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan, CHINA
Meisner, Johann; 2.3, Elektrische Energiemesstechnik, PTB-Braunschweig
Zhou, Feng; China Electric Power Research Institute, Wuhan, CHINA
Jiang, Chunyang; China Electric Power Research Institute, Wuhan, CHINA
Chen, Lixue; Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan, CHINA
|
| Quelle/Jahr | 2022 Conference on Precision Electromagnetic Measurements (CPEM):(2022), 499 - 500 |
| Konferenzangaben | Conference on Precision Electromagnetic Measurements (CPEM 2022), Wellington, 12-16, December, 2022, New Zealand |
| Freie Schlagworte | high-voltage ; two-stage VT ; precision measurements |
| Zusammenfassung | A two-stage voltage transformer (VT) with several rated transformer ratios and with a rated maximum voltage of 40 kV and a rated minimum voltage of 5 kV has been designed. To guarantee high accuracy over the full medium voltage range, the primary winding has been split into 4 primary windings, which can be configured in three different series and parallel connections. With five windings of the secondary, 15 different voltage ratios can be accomplished. This connection scheme, which is already used in older commercial standard VTs of the error class 0.02, achieves a very low effective output resistance, which in turn results in very small additional errors of less than 0.5∙10-6 due to the loading by the input of the transformer bridge. |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |