摘要
提出了一种新的带等式约束的状态估计算法 ,利用等式约束条件来修正加权最小二乘所得的状态量。利用这种算法能有效地利用系统中的一些虚拟零注入量测点数据 ,并且这种算法整体性不亚于拉格朗日多项式构造的等式约束算法 ,在增加很少计算量的情况下 ,达到提高状态估计结果精度的目的 ,保证了最小二乘状态估计的高效性 。
A new state estimation algorithm, which utilizes equality constraints to correct state variable obtained by WLS, is proposed. It can effectively utilize some virtual zero-injection measurement data in the system, and its unitary properties are better than those of the algorithm configured by Lagrange multipliers. The algorithm can also improve the accuracy of state estimation result by sacrificing less efficiency, which assures high efficiency of WLS and is beneficial to real-time application of state estimation.
出处
《电力系统自动化》
EI
CSCD
北大核心
2001年第21期42-44,50,共4页
Automation of Electric Power Systems
