谐波和无功电流检测方法的改进  

An Improved Harmonic and Reactive Current Detecting Method

作　　者：李雯[1] 陈国民[1] 张学辉[2] 李向昭[2] 

机构地区：[1]黑龙江科技学院电气与信息工程学院,哈尔滨150027 [2]烟台大学,山东烟台264005

出　　处：《电测与仪表》2009年第8期47-49,共3页Electrical Measurement & Instrumentation

摘　　要：实时、准确地检测出电网中的谐波电流和无功电流是进行谐波抑制和无功补偿的关键。本文在三相瞬时无功功率理论的基础提出了一种改进的单相无功电流检测算法,并建立了仿真模型,仿真结果表明:该算法可以及时、准确地检测出三相电路中的谐波电流和无功电流,同时也验证了此算法在DSP系统中的可行性。Detection of harmonic and reactive current is crucial to harmonic restraint and reactive compensation. The paper introduces an improved harmonic and reactive current detecting method based on there-phase reactive current using instantaneous reactive power theory. By using matlab, simulation model is built, and the results show that this model can exactly detect harmonic and reactive current in time and it is feasible in DSP system.

关 键 词：无功电流 谐波电流 瞬时无功功率理论 DSP 

分 类 号：TM76[电气工程—电力系统及自动化]