摘要
提出了一种考虑负荷动态恢复特性的系统静态电压稳定评估方法。分析了系统负荷可完全恢复和不可完全恢复两种状态的产生机理,解析了负荷的动态恢复过程,以求取系统静态电压稳定临界点的非线性模型为基础,引入参数化的负荷静态模型,构建求取受扰动系统负荷最大恢复程度的非线性模型,并使用现代内点法求解,由求得的负荷最大恢复程度判断系统的静态稳定性。经IEEE-57、118和S-1047节点算例测试,证明该方法切实可行。
A system static voltage stability assessment method considering load dynamic recovering characteristics is proposed. Generation mechanisms of two status of system load that can be totally recovered and cannot be totally recovered are analyzed. The dynamic recovering process of load is analyzed. Based on the nonlinear modal which is used to obtain the stability critical point of system static voltage and the introduced parameterized load static load modal, the nonlinear modal to achieve the max recovery degree of disturbed system load is constructed, which is solved by modern interior point method. The system static stability can be judged by the solved max recovery degree of load. Examples tests of IEEE-57,118 and S-1047nodes prove the proposed method is feasible.
出处
《广西电力》
2015年第2期1-5,共5页
Guangxi Electric Power
关键词
电压稳定
ZIP负荷模型
互补约束
现代内点法
voltage stability
ZIP load model
complementary constraint
modern interior point method
