Abstract：Aimed at a kind of long-distance power supply transformer wiring, “optical differential+ transformer differential” protection methods were put forworded in order to avoid loop interference about long differential protection current loop secondary wiring distance,large power transformer load and difficult selection problem.The principle and implementation of the protection methods were discussed and the relevant circuit connection and cooperation were designed.
刘玉涛. 一种针对变电站远距离供电的220kV等级变压器保护方法[J]. 电气技术, 2017, 18(4): 129-131.
Liu Yutao. The Protection Method for 220kV Transformer of Long-Distance Power Supply Substation. Electrical Engineering, 2017, 18(4): 129-131.
2017, Vol. 18 
