| Title | The Engineering Practical Calculation Method of Circulating Current in YD-connected Transformer |
| Publication Type | Conference Paper |
| Year of Publication | 2021 |
| Authors | Cao, Wenbin, Qi, Xuanwei, Wang, Song, Chen, Ming, Yin, Xianggen, Wen, Minghao |
| Conference Name | 2021 IEEE 2nd China International Youth Conference on Electrical Engineering (CIYCEE) |
| Keywords | circulating current, compositionality, Conferences, cyber physical systems, Delta winding, distortion, electrical engineering, engineering practical, Internet of Things, pubcrawl, reliability, Reliability engineering, remanence, Resiliency, Surge protection, transformer, Transformers |
| Abstract | The circulating current in the D-winding may cause primary current waveform distortion, and the reliability of the restraint criterion based on the typical magnetizing inrush current characteristics will be affected. The magnetizing inrush current with typical characteristics is the sum of primary current and circulating current. Using the circulating current to compensate the primary current can improve the reliability of the differential protection. When the phase is not saturated, the magnetizing inrush current is about zero. Therefore, the primary current of unsaturated phase can be replaced by the opposite of the circulating current. Based on this, an engineering practical calculation method for circulating current is proposed. In the method, the segmented primary currents are used to replace the circulating current. Phasor analysis is used to demonstrate the application effect of this method when remanence coefficients are different. The method is simple and practical, and has strong applicability and high reliability. Simulation and recorded waveforms have verified the effectiveness of the method. |
| DOI | 10.1109/CIYCEE53554.2021.9676753 |
| Citation Key | cao_engineering_2021 |
The Engineering Practical Calculation Method of Circulating Current in YD-connected Transformer