电力系统自动化Issue(2)：87-91,126,6.DOI:10.7500/AEPS20131010009
一种基于功角计算的振荡闭锁方案
A Scheme for Swing Blocking Based on Calculation of Power Angle
黄少锋 1赵远 1申洪明 1李天佼1
作者信息
- 1. 新能源电力系统国家重点实验室，华北电力大学，北京市 102206
- 折叠
摘要
Abstract
In view of the inadequacy of the present swing blocking method in practice,a scheme for swing blocking based on power angle calculation is studied.The system operation power angle at the moment of the second fault is taken as a basis of identifying the degree of oscillation and combined with the boundary criterion determined by the instability condition.Then the distance protection is allowed to be rapidly applied when the calculated angle is lower than the threshold during swing blocking. Research results show that the novel criterion is simple,clear and able to quantitatively reflect the process of the oscillation as well,thus improving the performance of distance protection in swing blocking.The discussion on the amplitudes of voltage at the two ends being not equal has enhanced the reliability and applicability of the scheme proposed.Finally,simulation results based on PSCAD/EMTDC show the correctness of the novel scheme.关键词
电力系统振荡/振荡闭锁/故障/振荡中心/正弦电压元件Key words
power system oscillation/swing blocking/fault/oscillation center/sine voltage component引用本文复制引用
黄少锋,赵远,申洪明,李天佼..一种基于功角计算的振荡闭锁方案[J].电力系统自动化,2015,(2):87-91,126,6.
