【摘要】 对近几年西北电网几次PT倒闸误操作引起变压器过励磁保护装置误动进行了详细的分析、探讨,为了杜绝此类事故的再次发生,在研究变压器过励磁特点的基础上,提出了变压器过励磁保护原理的改进建议,从理论上论证了其可行性。更多还原

【Abstract】 This paper gives a detailed analysis of several incorrect operations of PT in recent years, which result in maloperation of transformer overexcitation protection devices in northwest power network. To prevent similar accidents, improved scheme of transformer overexcitation protection based on its own characteristics is put forward, and its feasibility in theory is verified at last.更多还原