电工电气 (206 No.2)现状与展望电力变压器差动保护研究现状与发展趋势
基金项目:国家自然科学基金项目(51507157)作者简介:孙玉胜(1964- ),男,教授,硕士,研究方向为电器微控制器设计、智能化仪器仪表及电气控制和测量; 刘涛(1990- ),男(回族),硕士研究生,研究方向为变压器继电保护; 董宇(1990- ),女,硕士研究生,研究方向为变压器继电保护。电力变压器差动保护研究现状与发展趋势
孙玉胜1,刘涛1,董宇1,申克2
(1 郑州轻工业学院 电气信息工程学院,河南 郑州 450002;
2 中国化学工程第十一建设有限公司,河南 开封 475002)
摘 要: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。
关键词:电力系统;变压器;差动保护;内外部故障;灵敏性;可靠性
中图分类号:TM41 文献标识码:A 文章编号:1007-3175(2016)12-0001-06
Abstract: With the increase of electrical load and nonlinear electrical component, the traditional differential protection hasn’t met the re-quirement 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. Key words: electric power system; transformer; differential protection; internal and external fault; sensitivity; securitySUN Yu-sheng, LIU Tao, DONG Yu, SHEN Ke2( College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;2 China Eleventh Chemical Construction Company Limited, Kaifeng 475002, China)Research Status and Development Trend of Power