500kV主变差动保护启动前负荷向量预算方法

Atypical Budget Method of the Vector-load Before 500 kV Main Transformer Differential Protection Starting

通过对500 kV主变参数及启动方案的研究,验证500 kV主变差动保护在启动前负荷向量预测及核算的必要性,进一步掌握构成主变差动保护的电流二次回路的接入方法和各类差动保护的构成,确保主变保护正确投运,安全运行。

Through the research of the 500 kV main transformer parameters and the starting scheme,this article confirms the necessity of forecasting and accounting the vector-load before 500 kV main transformer differential protection starting,further masters the access method of current secondary circuits which constituting the main transformer differential protection and all kinds of differential protection composition,then ensures the main transformer protection operating correctly and safely。