公开(公告)号：US10241532B2

公开(公告)日：2019-03-26

申请号：US14850657

申请日：2015-09-10

Applicant: Tsinghua University

Inventor： Hongbin Sun ,  Qinglai Guo ,  Bin Wang ,  Boming Zhang ,  Wenchuan Wu ,  Huaichang Ge

IPC: G05F1/625 ,  G05F1/66

Abstract: The present disclosure relates to a partition method and a partition device for a power system and belongs to a field of an evaluation and control of a power system. The method includes steps of: obtaining a quasi-steady sensitivity matrix according to generators participating in automatic voltage control and load buses in the power system; obtaining a power system model according to the quasi-steady sensitivity matrix and the load buses; determining principal component vectors and principal component singular values according to the power system model; determining a principal component vector dominated by each generator according to the principal component vectors and the principal component singular values; and partitioning the generators dominating a same principal component vector to a partition, and partitioning the load buses according to a partition result for the generators.

公开(公告)号：US10218176B2

公开(公告)日：2019-02-26

申请号：US15009770

申请日：2016-01-28

Applicant: Tsinghua University ,  ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID CO., LTD.

Inventor： Qinglai Guo ,  Hongbin Sun ,  Boming Zhang ,  Wenchuan Wu ,  Huaichang Ge ,  Mingye Zhang ,  Yongwang Zhang ,  Wei Zhao ,  Guoying Lin

IPC: H02J4/00 ,  H02J3/14 ,  B60L11/18

Abstract: A method and a device for controlling a local voltage are provided. The method includes: obtaining a first voltage value of a high-voltage side bus in a local transformer substation; determining a control strategy according to a starting threshold value for a voltage enhancement control, a starting threshold value for an under-voltage load shedding and the first voltage value of the high-voltage side bus; and performing the control strategy to control a charging power of an electric vehicle charging station corresponding to the local transformer substation, so as to control the local voltage of the local transformer substation.

公开(公告)号：US11228179B2

公开(公告)日：2022-01-18

申请号：US16848654

申请日：2020-04-14

Applicant: TSINGHUA UNIVERSITY ,  STATE GRID BEIJING ELECTRIC POWER COMPANY ,  STATE GRID JIBEI ELECTRIC POWER COMPANY

Inventor： Bin Wang ,  Hongquan Ji ,  Yanling Du ,  Qinglai Guo ,  Xijuan Yu ,  Haitao Liu ,  Hongbin Sun ,  Guannan Wang ,  Mang Jiang ,  Huaichang Ge ,  Wenchuan Wu

IPC: H02J3/38 ,  F03D7/04 ,  H02P9/04 ,  H02P101/15

Abstract: The present disclosure proposes a decomposition-coordination voltage control method for wind power to be transmitted to a nearby area via flexible DC. The method includes: initializing parameters; sending the parameters to wind power farms; for each of the wind power farms, establishing a voltage control optimization sub-model; solving the voltage control optimization sub-model to obtain a first optimal result; for the control center, establishing a voltage control optimization main model; solving the voltage control optimization main model to obtain a second optimal result; calculating a determination index based on the first optimal result and the second optimal result; and determining whether the determination index is convergent to an admissible value, if no, updating the parameters and returning to establishing the voltage control optimization sub-model.

公开(公告)号：US10001762B2

公开(公告)日：2018-06-19

申请号：US14601390

申请日：2015-01-21

Applicant: Tsinghua University

Inventor： Hongbin Sun ,  Qinglai Guo ,  Bin Wang ,  Boming Zhang ,  Xuran Wang ,  Huaichang Ge ,  Wenchuan Wu

IPC: G05B15/02 ,  H02J3/16

CPC classification number: G05B15/02 ,  H02J3/16 ,  Y02E40/34

Abstract: A voltage control method and apparatus of a central bus in a power system are provided. The method comprises: S1: obtaining a predetermined voltage and a current voltage; S2: obtaining a first voltage adjustment of the generator and a second voltage adjustment of the dynamic reactive power compensation device; S3: sending the first voltage adjustment and the second voltage adjustment; S4: judging whether a current reactive power of the dynamic reactive power compensation device is between a first predetermined reactive power and a second predetermined reactive power; S5: if yes, obtaining a third voltage adjustment of the generator and a fourth voltage adjustment of the dynamic reactive power compensation device; S6: sending the third voltage adjustment and the fourth voltage adjustment; repeating steps S1-S7 after a predetermined period of time; S7: if no, repeating steps S1-S7 after the predetermined period of time.