| Zdroj: |
Bak, C L, da Silva, F M F, Gudmundsdottir, U S, Wiechowski, W T & Knardrupgård, M R 2009, Use of a Pre-Insertion Resistor to Minimize Zero-Missing Phenomenon and Switching Overvoltages . in Proceedings of the IEEE Power and Energy Society General Meeting . IEEE, pp. 1-7, IEEE Power and Energy Society General Meeting, 2009. PES '09. IEEE, Calgary, Alberta, Canada, 26/07/2009 . https://doi.org/10.1109/PES.2009.5275992 |
| Popis: |
With the increasing use of High-Voltage Cables, which have different electric characteristics from Overhead Lines, phenomenon like current zero-missing start to appear more often on the transmission systems. Methods to prevent zero-missing phenomenon are still being studied and compared to see which countermeasure works the best. Technically the best way to avoid zero-missing phenomenon produces very high switching overvoltages, making the operator to choose to either avoid the zero-missing phenomenon or to minimize the switching transients. This paper presents a method of determining an optimal value of the resistance of the pre-insertion resistor that results in minimizing both the zero-missing phenomenon and switching overvoltages simultaneously. With the increasing use of High-Voltage Cables, which have different electric characteristics from Overhead Lines, phenomenon like current zero-missing start to appear more often on the transmission systems. Methods to prevent zero-missing phenomenon are still being studied and compared to see which countermeasure works the best. Technically the best way to avoid zero-missing phenomenon produces very high switching overvoltages, making the operator to choose to either avoid the zero-missing phenomenon or to minimize the switching transients. This paper presents a method of determining an optimal value of the resistance of the pre-insertion resistor that results in minimizing both the zero-missing phenomenon and switching overvoltages simultaneously. |
