电力系统自动化Issue(20)：124-129,6.DOI:10.7500/AEPS20150403009
有限相量测量单元下最小二乘估计的广域后备保护算法
Wide-area Backup Protection Algorithm Based on Least Squares Estimation with Limited PMU
摘要
Abstract
A wide-area backup protection algorithm based on the limited phasor measurement units (PMUs) is studied.With one-bus spaced placement strategy for distributed PMUs,the bus voltage values of regional nodes are estimated by the least squares estimation method,and then the estimated line current values are calculated by estimated voltage values.After sorting the residuals of measured and estimated current values,the two lines with largest estimated values are taken as the suspected fault lines.The fault lines are determined by calculating multiple fault locations of suspected fault lines with the multiple groups of voltage fault components.Using the characteristics of fault locations lying between [0,1],the three kinds of line fault criterions are given.The simulation results on an IEEE 14-bus testing system illustrate that the proposed algorithm can accurately determine the fault lines and is not influenced by fault location and fault types.关键词
广域后备保护/相量测量单元/故障搜索/故障点位置/最小二乘估计Key words
wide-area backup protection/phasor measurement unit/fault searching/fault location/least squares estimation引用本文复制引用
王晨,童晓阳,王睿晗..有限相量测量单元下最小二乘估计的广域后备保护算法[J].电力系统自动化,2015,(20):124-129,6.基金项目
国家自然科学基金资助项目(51377137) （51377137）
已申请国家发明专利(申请号:201410515303.7)。This work is supported by National Natural Science Foundation of China(No.51377137) （申请号:201410515303.7）
