电力系统自动化2016，Vol.40Issue(9)：71-77,123,8.DOI:10.7500/AEPS20150603004
相继换相失败对基于相位角的失步解列判据的影响机理
Mechanism Analysis of Successive Commutation Failures Influence on Out-of-step Splitting Criterion Based on Phase Angle
摘要
Abstract
In the process of high voltage direct current transmission system successive commutation failures,even though no out-of-step oscillation has occurred,electrical quantities on AC lines nearby inverter station will still vary cyclically,which may lead to maloperation of the out-of-step splitting device.By taking the out-of-step splitting criterion based on the phase angle between voltage and current phasor as an example,the effect of successive commutation failures on the splitting criterion is studied.An AC/DC hybrid system simulation model is established on PSCAD/EMTDC,the electrical quantities variation characteristics on AC/DC system during successive commutation failures are analyzed and periodic variation features of inverter bus voltage are summarized.Then,the phase angle traj ectories on AC lines during the process of successive commutation failures are calculated for time-domain analysis, the influence of the corresponding electrical quantities on phase angle traj ectories features are analyzed and the mechanism of effect of successive commutation failures on the out-of-step splitting criterion is revealed.A numerical example is given to demonstrate the validity of the theoretical analysis.关键词
失步解列判据/相位角/交直流混联系统/相继换相失败Key words
out-of-step splitting criterion/phase angle/AC/DC hybrid system/successive commutation failures引用本文复制引用
王黎欣,方勇杰,徐海波,侯玉强,郑玉平..相继换相失败对基于相位角的失步解列判据的影响机理[J].电力系统自动化,2016,40(9):71-77,123,8.基金项目
This work is supported by State Grid Corporation of China （）
