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.

公开(公告)号：US20180309294A1

公开(公告)日：2018-10-25

申请号：US15577127

申请日：2017-06-16

Applicant: Northeastern University

Inventor： Huaguang ZHANG ,  Jun YANG ,  Qiuye SUN ,  Feiye WU ,  Xinrui LIU ,  Dongsheng YANG ,  Zhiliang WANG ,  Jian FENG ,  Bonan HUANG ,  Yanhong LUO ,  Guotao HUI ,  Zhenwei LIU

IPC: H02J3/18 ,  H02J3/16 ,  G05F1/14

CPC classification number: H02J3/1885 ,  G05F1/14 ,  H02J3/16 ,  H02J3/18 ,  H02J3/1878 ,  H02J2003/007

Abstract: The invention provides a reactive power optimization system and a method of a power grid based on a double-fish-swarm algorithm. The system includes a power grid state data acquiring module, a reactive power regulating module and a reactive power executing module. The power grid state data acquiring module includes a power grid state data acquisitor and a relay transmitter. The reactive power regulating module is a control terminal. The reactive power executing module includes generator terminal voltage regulators, transformer tap regulators and reactive power compensation regulators. The method is used for acquiring the initial data to be optimized in the current network; and optimizing the initial data to be optimized in the current network based on a double-fish-swam algorithm so as to obtain optimal value of control variables in the power grid. According to the method, the distribution network to be optimized can realize reasonable reactive power flow distribution.

公开(公告)号：US20160241137A1

公开(公告)日：2016-08-18

申请号：US14717823

申请日：2015-05-20

Applicant: Northeastern University

Inventor： Qiuye SUN ,  Huaguang ZHANG ,  Dazhong MA ,  Bonan HUANG ,  Lei CHEN ,  Heng DU ,  Zhenwei LIU ,  Fei TENG ,  Guotao HUI

IPC: H02M3/04 ,  H02J1/00 ,  H02J5/00

CPC classification number: H02J1/00 ,  H02J1/14 ,  H02J4/00 ,  H02J5/00 ,  H02M3/1582 ,  H02M3/285 ,  H02M3/337 ,  H02M7/219 ,  H02M7/797 ,  H02M2001/007 ,  Y02B70/1425 ,  Y02B70/1433 ,  Y02B70/1441

Abstract: The present invention relates to an energy router for an energy internet, which comprises a three-phase three-level bi-directional rectifying unit, a six-phase interleaved DC/DC bi-directional conversion unit, a self-excitation soft start push-pull full-bridge DC/DC bi-directional conversion unit, a three-phase resonant soft switching bi-directional inversion unit, a single-phase full-bridge bi-directional inversion unit, a high-voltage DC bus and a low-voltage DC bus. The three-phase three-level bi-directional rectifying unit, the six-phase interleaved DC/DC bi-directional conversion unit, the self-excitation soft start push-pull full-bridge DC/DC bi-directional conversion unit, the three-phase resonant soft switching bi-directional inversion unit and the single-phase full-bridge bi-directional inversion unit each have three energy flow operating modes: a forward conduction, a reverse conduction and a non-conduction. According to the energy flow operating mode of each unit, different operating modes of the energy router for the energy internet are formed.

Abstract translation: 本发明涉及一种用于能量互联网的能量路由器，其包括三相三电平双向整流单元，六相交错DC / DC双向转换单元，自激软启动推挽单元， 拉全桥DC / DC双向转换单元，三相谐振软开关双向反相单元，单相全桥双向反转单元，高压直流母线和低压 直流母线 三相三电平双向整流单元，六相交错DC / DC双向转换单元，自励软启动推挽全桥直流/直流双向转换单元，三相 相位共振软开关双向反转单元和单相全桥双向反相单元各具有三种能量流动工作模式：正向传导，反向传导和非导通。 根据每个单元的能量流动模式，形成能量互联网能量路由器的不同运行模式。