井下低压供电系统微机反时限过流保护算法的研究  

Research on Microcomputer Inverse Time Over-Current Protection Algorithm of Underground Low-Voltage Power-System

作　　者：马星河[1,2] 贾俐[1] 张根现 赵军营[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454001 [2]义马煤业(集团)股份有限公司,河南义马472300

出　　处：《煤矿机电》2011年第4期8-11,共4页Colliery Mechanical & Electrical Technology

基　　金：河南省科技攻关项目(092102210356)

摘　　要：为解决普通反时限中的C=0.02的形式微机难以直接实现的问题,选择了泰勒展开法,并挑选了一般反时限和热过载(无存储)反时限进行实验。在分析反时限保护的通用数学模型和传统的反时限算法存在问题的基础上,提出了适用于微机的反时限过流保护算法,并分析了查表法和泰勒展开法。通过实验证明,泰勒展开法可以精确地实现微机反时限特性。In order to solve the problem of C=0.02 of general anti-time in microcomputer that cannot implement directly,the Taylor expansion method is being chosen and selects the general anti-time and thermal over-load（no storage） anti-time for experiment.On the basis of analyzing the existing problems of anti-time protection＇s general mathematical model and traditional anti-time algorithm,the inverse time over-current protection algorithm suited for Microcomputer is proposed.The look-up table method and Taylor expansion method are analyzed.The experiment proved that the Taylor expansion method can achieve exactly the features of microprocessor-based inverse time.

关 键 词：反时限过流 微机保护 查表法 泰勒展开法 

分 类 号：TM773.1[电气工程—电力系统及自动化]