基于故障分量的新型变压器自适应比率差动保护

提高变压器差动保护的安全性和灵敏性一直是学术界关注的热点问题。故障分量差动保护由于灵敏度更高,已经在实际运行中得到广泛应用,但是该保护（包括全电流差动保护）判据由于固定了动作特性曲线的有关参数,导致不能同时提高保护的安全性和灵敏度。文中提出了一种自适应比率差动保护的新判据,该判据可以根据系统运行状态来调节动作特性各参数...

A New Transformer Adaptive Differential Protection Based on Fault Component

It has been the focus of study on improving the security and sensitivity of transformer differential protection recently.Because of its higher sensitivity,differential protection based on fault component has been widely used in practice.But traditional criterion of differential protection is impossible to improve both security and sensitivity of protection simultaneously with setting fixed characteristic curve.A new criterion for adaptive protection that can adjust the parameters of protection characteristi...