公开(公告)号：US20190293699A1

公开(公告)日：2019-09-26

申请号：US16120907

申请日：2018-09-04

Applicant: Northeastern University

Inventor： Huaguang ZHANG ,  Jun YANG ,  Jie BAI ,  Gang WANG ,  Qiuye SUN ,  Xinrui LIU ,  Yingchun WANG ,  Dongsheng YANG ,  Zhiliang WANG ,  Bonan HUANG ,  Zhanshan WANG ,  Yanhong LUO

IPC: G01R21/133

Abstract: The invention provides an electric grid state estimation system and method based on a boundary fusion. The system includes an electric grid data acquisition module, a communication module including a local data unit and a state estimation unit, and a data fusion module, wherein the state estimation unit includes a memory storing a state estimation program and a display displaying a program running and outputting a state variable; the state estimation program is performed to realize an electric grid state estimation; the estimation method includes the following steps of dividing a regional electric grid, then establishing a measurement equation for each region, solving an internal quantity and a boundary quantity, fusing the boundary quantities of two regions, correcting the boundary quantity, performing a non-linear transformation on the intermediate variable, solving the estimated values of the state variable by the least square method, and performing outputting.