文献类型：期刊文献

中文题名：基于非饱和区波形正弦度的涌流识别算法研究

英文题名：Study for identification algorithm of inrush based on sine degree principle of differential current waveforms in non-saturation of transformer

作者：梁志坚[1];古斌[1,2];谭建成[1];李啸骢[1]

机构：[1]广西大学电气工程学院,广西南宁530004;[2]绍兴文理学院工学院,浙江绍兴312000

年份：2009

期号：9

起止页码：73

中文期刊名：电力系统保护与控制

外文期刊名：Power System Protection and Control

收录：CSTPCD、、EI(收录号：20092912201856)、Scopus(收录号：2-s2.0-67650263601)、北大核心2008、CSCD_E2011_2012、北大核心、CSCD

基金：国家自然科学基金(50747026);广西研究生教育创新项目(2008105930808 D011)~~

语种：中文

中文关键词：变压器差动保护;励磁涌流;内部故障;波形正弦度;非饱和区

外文关键词：transformer differential protection; inrush current; internal fault; waveform sine degree; non-saturation zone

中文摘要：提出了一种基于波形正弦度的改进算法来识别变压器励磁涌流和故障电流。该方法通过比较动态差流短数据窗波形覆盖面积的大小,来确定短路故障或励磁涌流下变压器的差流非饱和区短窗波形,并计算该短窗差流波形的非正弦度来识别励磁涌流和故障电流。理论分析及仿真实验表明该涌流识别方法在带故障空载合闸及变压器运行中发生故障时,能够正确开放纵差保护;在正常空载合闸时,能可靠闭锁纵差保护。

外文摘要：An improved algorithm based on the sine degree principle of waveform is proposed. In the proposed algorithm, the non-saturation zone of transformer is decided by comparing the area in a short slide window of differential current waveform under magnetizing inrush and short-circuit fault, then the sine degree of the differential current waveform in the non-saturation zone is calculated to discriminate the inrush current and fault current. The theory analysis and the simulation experiment verify the algorithm based on the sine degree principle of waveform in the non-saturation zone of transformer can correctly switch on the differential protection for the internal short-circuit fault in operation and energizing with turn-to-turn short-circuit, and block reliably the protection during the magnetizing inrush.