基于改进P-Q电流检测法的研究与仿真  

Research and Simulation of Improved P-Q Current Test

作　　者：史丽萍[1] 朱林[1] 戴广剑[1] 徐溪[1] 

机构地区：[1]中国矿业大学,江苏徐州221008

出　　处：《电测与仪表》2013年第11期51-54,共4页Electrical Measurement & Instrumentation

基　　金：中央高校基本科研业务专项资金资助(2012QN31)

摘　　要：针对目前电网电流检测不准确问题,介绍一种新的检测方法,即改进的P-Q法,可避免电网电压畸变及不平衡所造成的检测误差,从而使得检测结果更为准确。另外,也简要分析了传统两种检测方法的原理,并在电网电压畸变仍对称或不对称两种情况下进行仿真比较,证明改进后的检测方法的正确性与准确性。Considering the problem of inaccurate current detection for present power grid, this paper introduces a new detection method, namely improved p-q method. It can avoid detection errors caused by power grid voltage distortion and imbalance, therefore improves test result accuracy. In addition, this paper briefly analyzes the principle of two traditional detection methods, and performs simulation and comparison for symmetric and asymmetric power grid voltage distortions. Results show the validity and accuracy of the improved detection method.

关 键 词：改进P-Q法 P-Q法 IP-IQ法 电压不平衡 SIMULINK仿真 

分 类 号：TM93[电气工程—电力电子与电力传动]