电力变压器差动保护研究现状与发展趋势

Research Status and Development Trend of Power Transformer Differential Protection

随着用电负荷和非线性电气元件的增加,传统的差动保护已经不能满足变压器保护的灵敏性和可靠性的需求。阐述了国内外变压器差动保护研究的发展历程,对其保护原理进行了分类总结,指出了现有保护原理存在的不足,并对变压器差动保护的研究方向进行了展望。

With the increase of electrical load and nonlinear electrical component, the traditional differential protection hasn’t met the requirement of sensitivity and reliability of transformer protection in transformer protection. This paper expounded the development history of transformer differential protection at home and abroad, carried out classification summary for its protection principle, pointed out the existing deficiency of protection principle now available and carried out expectation for transformer differential protection.