公开(公告)号：US20150066401A1

公开(公告)日：2015-03-05

申请号：US14017448

申请日：2013-09-04

Applicant: ABB Technology AG

Inventor： Vaibhav D. Donde ,  Xiaoming Feng

IPC: G01R21/133

CPC classification number: G01R19/2513 ,  H02J3/36 ,  Y02E60/60 ,  Y02E60/74 ,  Y04S10/30

Abstract: A power system grid is decomposed into several parts and decomposed state estimation steps are executed separately, using Lagrangian relaxation and blockwise Gauss-Seidel solution. The achieved solution is the same that would be achieved with a simultaneous state estimation approach. With the disclosed approach, the state estimation problem can be distributed among decomposed estimation operations for each subsystem, where the decomposed estimation operations coordinate with one another to yield the complete state estimate. The approach is particularly suited for estimating the state of power systems that are naturally decomposed into separate subsystems, such as separate AC and HVDC systems, and/or separate transmission and distribution systems.

Abstract translation: 电力系统网格分解为几个部分，分解状态估计步骤分别执行，使用拉格朗日弛豫和块状高斯塞德解决方案。 所实现的解决方案与通过同时状态估计方法实现的解决方案相同。 利用所公开的方法，可以在每个子系统的分解估计操作之间分布状态估计问题，其中分解的估计操作彼此协调以产生完整的状态估计。 该方法特别适用于估计自然分解为独立子系统的电力系统的状态，例如单独的AC和HVDC系统，和/或单独的传输和分配系统。