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.
出处
《三峡大学学报（自然科学版）》
CAS
2007年第5期411-414,共4页
Journal of China Three Gorges University：Natural Sciences
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
adaptive current instantaneous trip protection
all-wave Fourier algorithm with compensation
decaying DC component
