公开(公告)号：US11689024B2

公开(公告)日：2023-06-27

申请号：US17383658

申请日：2021-07-23

申请人： Tsinghua University

发明人： Wenchuan Wu ,  Shuwei Xu ,  Boming Zhang ,  Hongbin Sun ,  Bin Wang ,  Qinglai Guo

IPC分类号： H02J3/38 ,  G05B19/042

CPC分类号： H02J3/381 ,  G05B19/042 ,  G05B2219/2639 ,  H02J2203/20 ,  H02J2300/28

摘要： The disclosure relates to a two-side stochastic dispatching method for a power grid. By analyzing historical data of wind power, the Gaussian mixture distribution is fitted by software. For certain power system parameters, a two-side chance-constrained stochastic dispatching model is established. The hyperbolic tangent function is used to analyze and approximate cumulative distribution functions of random variables in the reserve demand constraint and the power flow constraint, to convert the two-side chance constraint into a deterministic constraint. The disclosure can have the advantage of using the hyperbolic tangent function to convert the two-side chance constraint containing risk levels and random variables into the solvable deterministic convex constraint, effectively improving the solution efficiency of the model, and providing decision makers with a more reasonable dispatching basis.

公开(公告)号：US11411406B2

公开(公告)日：2022-08-09

申请号：US16664053

申请日：2019-10-25

申请人： TSINGHUA UNIVERSITY ,  STATE GRID JILINSHENG ELECTRIC POWER SUPPLY COMPANY ,  STATE GRID CORPORATION OF CHINA

发明人： Wenchuan Wu ,  Bin Wang ,  Yong Sun ,  Hongbin Sun ,  Qinglai Guo ,  Chenhui Lin

IPC分类号： G06F17/11 ,  H02J3/46 ,  H02J3/38 ,  H02J3/40

摘要： The present disclosure relates to a method, an apparatus and a storage medium for controlling a combined heat and power system, belonging to the field of power system technologies. The method discloses: establishing a decision model, the decision model including an objective function aiming to minimize a total cost of the first generators and the second generators, and constraints with respect to the first generators, the second generators and the heating exchange stations; solving the decision model to acquire operation states of the first generators, operation states of the second generators, and operations states of the heating exchange stations; and controlling the combined heat and power system, based on the operation states of the first generators, the operation states of the second generators, and the operations states of the heating exchange stations.

公开(公告)号：US11262713B2

公开(公告)日：2022-03-01

申请号：US16842600

申请日：2020-04-07

申请人： Tsinghua University

发明人： Hongbin Sun ,  Qinglai Guo ,  Bin Wang ,  Zhaoguang Pan

IPC分类号： G05B13/04 ,  F01K27/00 ,  G06F30/20 ,  H02J3/38

摘要： A method for calculating control parameters of a heating supply power of a heating network, pertaining to the technical field of operation and control of a power system containing multiple types of energy. The method: establishing a heating network simulation model that simulates a thermal dynamic process of the heating network; starting an upward simulation based on the heating network simulation model to obtain first control parameters from a set of up adjustment amounts; starting a downward simulation based on the heating network simulation model, to obtain second control parameters from a set of down adjustment amounts.

公开(公告)号：US11043818B2

公开(公告)日：2021-06-22

申请号：US16542620

申请日：2019-08-16

申请人： TSINGHUA UNIVERSITY ,  STATE GRID CORPORATION OF CHINA

发明人： Wenchuan Wu ,  Bin Wang ,  Mingjie Li ,  Hongbin Sun ,  Qinglai Guo ,  Yue Yang ,  Shuwei Xu

IPC分类号： H02J3/38 ,  G05B19/042

摘要： The disclosure provides a stochastic look-ahead dispatch method for power system based on Newton method, belonging to power system dispatch technologies. The disclosure analyzes historical data of wind power output, and uses statistical or fitting software to perform Gaussian mixture model fitting. A dispatch model with chance constraints is established for system parameters. Newton method is to solve quantiles of random variables obeying Gaussian mixture model, so that chance constraints are transformed into deterministic linear constraints, thus transforming original problem to convex optimization problem with linear constraints. Finally, the model is solved to obtain look-ahead dispatch. The disclosure employs Newton method to transform chance constraints containing risk level and random variables into deterministic linear constraints, which effectively improves model solution efficiency, and provides reasonable dispatch for decision makers. The disclosure is employed to the dispatch of the power system including large-scale renewable energy grid-connected.

公开(公告)号：US10923916B2

公开(公告)日：2021-02-16

申请号：US16542651

申请日：2019-08-16

申请人： TSINGHUA UNIVERSITY ,  STATE GRID CORPORATION OF CHINA

发明人： Wenchuan Wu ,  Bin Wang ,  Mingjie Li ,  Hongbin Sun ,  Qinglai Guo ,  Yue Yang ,  Shuwei Xu

IPC分类号： H02J3/38 ,  G05B17/02

摘要： The disclosure provides a stochastic dynamical unit commitment method for power system based on solving quantiles via Newton method, belonging to power system technologies. The method establishes a unit commitment model with chance constraints for power system parameters. Quantiles of random variables obeying mixed Gaussian distribution is solved by Newton method, and chance constraints are transformed into deterministic linear constraints, so that original problem is transformed into mixed integer linear optimization problem. Finally, the model is solved to obtain on-off strategy and active power plan of units. The disclosure employs Newton method to transform chance constraints containing risk level and random variables into deterministic mixed integer linear constraints, which effectively improves the model solution efficiency, eliminates conservative nature of conventional robust unit commitment, provides reasonable dispatch basis for decision makers. The disclosure is employed to the stochastic and dynamic unit commitment of the power system including large-scale renewable energy grid-connected.

公开(公告)号：US10222815B2

公开(公告)日：2019-03-05

申请号：US15331876

申请日：2016-10-23

申请人： Tsinghua University

发明人： Wenchuan Wu ,  Boming Zhang ,  Hongbin Sun ,  Weiye Zheng ,  Qinglai Guo ,  Bin Wang

IPC分类号： G06F17/50 ,  G05F1/66 ,  G05B23/02 ,  G06F17/11

摘要： A method and a device for estimating a state of a power system are provided. The method includes: dividing the power system into a plurality of sub-systems; establishing a first linear model of the power system for a first stage; solving the first linear model by an alternating direction multiplier method to obtain the intermediate state variables of each sub-system; performing a nonlinear transformation at a second stage on the intermediate state variables to obtain intermediate measured values; establishing a second linear model of the power system for a third stage according to the intermediate measured values; and solving the third linear model by the alternating direction multiplier method to obtain the final state variables of each sub-system.

公开(公告)号：US12104803B2

公开(公告)日：2024-10-01

申请号：US17152041

申请日：2021-01-19

申请人： Tsinghua University

发明人： Hongbin Sun ,  Qinglai Guo ,  Bin Wang ,  Guanxiong Yin ,  Tongtian Sheng ,  Zhaoguang Pan

IPC分类号： F24D18/00 ,  G05D23/19 ,  G06F30/20 ,  G06F119/08

CPC分类号： F24D18/00 ,  G05D23/1934 ,  G06F30/20 ,  G06F2119/08

摘要： The disclosure provides a method, an apparatus, and a storage medium for controlling heating system. The method includes: establishing an objective function and constraints for estimating system parameters of the heating system, in which the heating system includes nodes, pipelines and equivalent branches, the equivalent branch is configured to represent a heating resource or a heating load in the heating system, the system parameters include a resistance coefficient of each of the pipelines and equivalent branches, and a heat dissipation coefficient of each of the pipelines; solving the objective function based on the constraints to obtain the system parameters; modeling the heating system based on the obtained system parameters to obtain control parameters of the heating system; and controlling the heating system based on the control parameters.

公开(公告)号：US11954409B2

公开(公告)日：2024-04-09

申请号：US17366199

申请日：2021-07-02

申请人： Tsinghua University

发明人： Wenchuan Wu ,  Boming Zhang ,  Zihao Li ,  Hongbin Sun ,  Bin Wang ,  Qinglai Guo

IPC分类号： G06F30/18 ,  G06F111/04 ,  G06F113/04 ,  G06F119/02 ,  G06Q10/0631 ,  G06Q50/06 ,  H02J3/00 ,  G06F111/06 ,  G06Q50/08

CPC分类号： G06F30/18 ,  G06Q10/06313 ,  G06Q50/06 ,  H02J3/00125 ,  G06F2111/04 ,  G06F2111/06 ,  G06F2113/04 ,  G06F2119/02 ,  G06Q50/08 ,  H02J2203/20 ,  Y02E60/00 ,  Y04S40/20

摘要： The present disclosure provides a method for planning a distribution network with reliability constraints based on a feeder corridor, including determining installation states of respective elements in the distribution network; determining an objective function, the objective function being an objective function of minimizing a total investment cost of the distribution network; obtaining fault-isolation-and-load-transfer time and fault recovery time in a case where the feeder segment of each feeder line that is contained in each feeder corridor fails; determining constraint conditions including reliability constraints; building a distribution network planning model according to the objective function and the constraints; and solving the distribution network planning model built to obtain optimal solutions as planning states and reliability indexes to plan the distribution network.

公开(公告)号：US11774624B2

公开(公告)日：2023-10-03

申请号：US17000238

申请日：2020-08-21

申请人： TSINGHUA UNIVERSITY ,  BEIJING INSTITUTE OF SATELLITE ENVIRONMENTAL ENGINEERING

发明人： Xiao-Ping Zheng ,  Zhen-Yuan Sun ,  Hua Geng ,  Xiao-Jiao Deng ,  Bin Wang

IPC分类号： G01V3/38 ,  G01V3/12 ,  F41H11/136

CPC分类号： G01V3/38 ,  F41H11/136 ,  G01V3/12

摘要： A method for discovering an unexploded ordnance in a target area includes: acquiring first feedback signals respectively corresponding to detection regions, the first feedback signals being first induced electromotive force signals; judging whether there is any abnormal signal in the first feedback signals, if there is the abnormal signal, determining the detection region corresponding to the abnormal signal is an abnormal region; acquiring second feedback signals respectively corresponding to detection sites in the abnormal region, the second feedback signals being magnetic field gradient signals; acquiring third feedback signals respectively corresponding to the detection sites, the third feedback signals being second induced electromotive force signals; acquiring location information of the detection sites; obtaining a feature spatial distribution map of the abnormal region; and judging whether there is any unexploded ordnance in the abnormal region according to the feature spatial distribution map.

公开(公告)号：US11768058B2

公开(公告)日：2023-09-26

申请号：US17000263

申请日：2020-08-21

申请人： TSINGHUA UNIVERSITY ,  BEIJING INSTITUTE OF SATELLITE ENVIRONMENTAL ENGINEERING

发明人： Xiao-Ping Zheng ,  Zhen-Yuan Sun ,  Hua Geng ,  Xiao-Jiao Deng ,  Bin Wang

IPC分类号： F41H11/136 ,  G01V3/10

CPC分类号： F41H11/136 ,  G01V3/10

摘要： A detection method for discovering an unexploded ordnance includes: surrounding a detection region with a transmitting coil and surrounding a detection site with a second receiving coil; conducting the transmitting coil with a second electric current; respectively acquiring a plurality of second feedback signals at a plurality of second feedback time points; partitioning the transmitting coil into a plurality of dipoles, and acquiring a plurality of distance values r respectively between the plurality of dipoles and the detection site; respectively calculating feedback depths according to feedback time periods; respectively calculating apparent resistivity values corresponding to the feedback depths; obtaining an apparent resistivity distribution in depth at the detection site according to the apparent resistivity values and the feedback depths; and judging whether there is any unexploded ordnance at the detection site according to the apparent resistivity distribution in depth.