基于DSP的自适应电流速断保护中系统参数实时计算的实现  

The Algorithm of Correlative System Parameters of Adaptive Current Instantaneous Trip Protection Based on DSP

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443000

出　　处：《电力学报》2009年第5期384-387,共4页Journal of Electric Power

摘　　要：提出了基于DSP的自适应电流速断保护中系统参数实时计算的实现方法,同时给出了硬软件的设计。在系统发生故障时采用带补偿的全波傅氏算法,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。分析表明该方法能够满足数据的实时处理和精度要求。The algorithm of correlative system parameters of adaptive current instantaneous trip protection based on DSP is presented. Hardware and software design are given. All-wave fourier algorithm with compensation is adopted when faults occur in power system. Integrated system impedance is calculated in real-time, and then to calculate equivalence inner potential with the measured voltage and current in sampling signals before faults occur in computer memory. The real-time processing of data and required precision are served.

关 键 词：电力系统 自适应电流速断保护 带补偿的全波傅氏算法 DSP 

分 类 号：TM761[电气工程—电力系统及自动化]