基于最小二乘法的自适应电流速断保护中系统参数的实时计算  

Algorithm of Correlative System Parameters of Adaptive Current Instantaneous Trip Protection Based on Least Square Method

作　　者：牛祖蘅[1] 袁兆强[1] 

机构地区：[1]三峡大学电气信息学院,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2007年第5期411-414,共4页Journal of China Three Gorges University：Natural Sciences

摘　　要：对自适应电流速断保护中实时计算系统参数的算法进行了研究.提出了在系统发生故障时采用带补偿的全波傅氏算法,基于最小二乘法推导全波傅氏算法的补偿分量,并实时计算出系统的等值内电抗,然后再利用记忆在计算机存储器中的故障前的测量电压、电流采样值来计算系统等值内电势的相电势幅值Em.The algorithm of correlative system parameters of adaptive current instantaneous trip protection is studied.An all-wave Fourier algorithm with compensation when faults occur in power system is presented.The compensate component is derived from least square method.Integrated system equivalent impedance is calculated in real-time;and then to calculate equivalent inner potential with the measured voltage and current in sampling signals before faults occur in computer memory.

关 键 词：自适应电流速断保护 带补偿的全波傅氏算法 衰减直流分量 

分 类 号：TM771[电气工程—电力系统及自动化]