一种改进的判别负载电流状态算法  

An Improved Algorithm for Judging the State of Load Current

作　　者：李自成[1] 孙玉坤[1] 刘国海[1] 杨建宁[1] 黄永红[1] 

机构地区：[1]江苏大学电气信息工程学院,镇江212013

出　　处：《高电压技术》2008年第10期2221-2227,共7页High Voltage Engineering

基　　金：江苏省高校研究生科技创新计划项目(1221140004);江苏大学高级人才专项基金资助项目(1283000064)~~

摘　　要：鉴于基于动态迭代步长的判别负载电流状态算法存在的问题,研究了不考虑定义2的基于动态迭代步长的判别负载电流状态算法;针对仿真发现的该算法存在的两个问题。针对此算法存在的这两个问题提出了改进的基于动态迭代步长的判别负载电流状态算法。此改进算法在不考虑定义2的基于动态迭代步长的判别负载电流状态算法的基础上,通过简单的计数判断就能够非常准确地判定负载电流状态,误判率非常小。理论分析,仿真和实验都证实了该改进算法的有效性。Aiming at existent problems of the algorithm for judging the state of load current based on dynamic iterative step length, the algorithm for judging the state of load current is proposed without considering definition 2 based on dynamic iterative step length. Two problems of the algorithm are found by simulation, thereby, the algorithm is improved respectively. Consequently, the improved algorithm for judging the state of load current is proposed based on dynamic iterative step length. On the basis of the algorithm for judging the state of load current without considering definition 2 based on dynamic iterative step length, the simply counting and judging are added and then the improved algorithm can very accurately judge the state of load current and the ratio of misjudging is very low. The validity of the improved algorithm is verified by theoretical analysis, simulation and experiment.

关 键 词：有源电力滤波器 非线性负载电流 有功电流 无功电流 谐波电流 算法 固定迭代步长 动态迭代步长 

分 类 号：TM714[电气工程—电力系统及自动化]