公开(公告)号：US09658260B2

公开(公告)日：2017-05-23

申请号：US14017597

申请日：2013-09-04

Applicant: ABB Technology AG

Inventor： Xiaoming Feng ,  Vaibhav Donde ,  Ernst Scholtz

IPC: G01R21/00 ,  G01R19/25 ,  H02J3/36

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, on each part, using coordinated feedback regarding a boundary state. 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 and a coordinating operation that yields 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 into separate transmission and distribution systems.

公开(公告)号：US20150066402A1

公开(公告)日：2015-03-05

申请号：US14017597

申请日：2013-09-04

Applicant: ABB Technology AG

Inventor： Xiaoming Feng ,  Vaibhav Donde ,  Ernst Scholtz

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, on each part, using coordinated feedback regarding a boundary state. 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 and a coordinating operation that yields 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 into 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，每个部分使用关于边界状态的协调反馈。 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配状态估计问题，以及产生完整状态估计的协调操作。 该方法特别适用于估计自然分解成单独的子系统的电力系统的状态，例如单独的AC和HVDC系统，和/或分成单独的传输和分配系统。