摘要
为提高电力系统状态估计的准确度,在现有理论基础上提出了基于PMU/SCADA混合量测的状态估计方法,将电力系统划分为线性区域和非线性区域,在线性区域内计算与安装PMU装置相关联节点处的电压相量,将该计算结果作为间接量测引入非线性区域的状态估计中,从而使状态估计的准确度有所提高。仿真实验表明,在IEEE-14系统中,该算法计算速度快,能有效提高状态估计的精度,具有一定的实用价值。
In order to improve the accuracy of state estimation in power system,this paper proposes a PMU/SCADA hybrid measurement on the bases of the existing theory.The model divides power system into linear areas and nonlinear areas,and computes voltage vectors of nodes associated with the node with the installation of PMU device in the area of linear areas,and the calculated results is introduced into nonlinear areas as indirect measurement data in the state estimation,thus increase the accuracy of state estimation.Emulation experiment shows this algorithm put forward in this article have a fast computer speed,and can improve systematic redundancy degree in IEEE-14 system.The algorithm has certain practical value.
出处
《电测与仪表》
北大核心
2012年第7期11-15,共5页
Electrical Measurement & Instrumentation
关键词
电力系统
PMU
混合量测
状态估计
power system
PUM
mixture of measured data
state estimation
