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1. 发明授权

US11411406B2 Method, apparatus, and storage medium for controlling combined heat and power system 有权
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.

2. 发明授权

US11342753B2 Scheduling method for power system based on flexible HVDC 有权
公开(公告)号：US11342753B2
公开(公告)日：2022-05-24
申请号：US17029888
申请日：2020-09-23
申请人： TSINGHUA UNIVERSITY , STATE GRID JIBEI ELECTRIC POWER COMPANY , STATE GRID CORPORATION OF CHINA
发明人： Bin Wang , Yanling Du , Wenchuan Wu , Haitao Liu , Hongbin Sun , Weimin Sun , Zongda Mu , Chenhui Lin , Qinglai Guo
IPC分类号： G05B19/042 , H02J3/36 , H02J3/46 , H02J3/28
摘要： The present disclosure provides a scheduling method for a power system based on flexible HVDC (high-voltage direct current) and a pumped storage power station, which belongs to a field of power system control technologies. The method is applicable in a power system having a flexible HVDC system and a pumped storage power station. By establishing a scheduling model for the power system, which contains an objective function and multiple constraints, and solving the scheduling model, a capability of the pumped storage power station is used to adjust the unstable output of the renewable energy power generator and stabilize fluctuant of the renewable energy power generation, such that a power incoming into a load center presents a stable ladder pattern and an optimal scheduling scheme can be obtained.

3. 发明授权

US11043818B2 Random rolling scheduling method for power system based on Newton method 有权
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.

4. 发明授权

US10923916B2 Stochastic dynamical unit commitment method for power system based on solving quantiles via newton method 有权
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.

5. 发明授权

US11513485B2 Stability region determining method for distributed power cyber-physical system with multiple time delays 有权
公开(公告)号：US11513485B2
公开(公告)日：2022-11-29
申请号：US17328270
申请日：2021-05-24
申请人： Tsinghua University
发明人： Qinglai Guo , Hongbin Sun , Luo Xu , Wenchuan Wu
IPC分类号： G05B17/02
摘要： The present disclosure provides a stable region determining method for distributed cyber-physical power systems with multiple time delays, including: first establishing a state space expression of the cyber-physical power systems under distributed control with multiple time delays; converting the state space expression to frequency domain through Laplace transform to obtain a characteristic equation for multiple time delays of the cyber-physical power systems under distributed control, and establishing a marginally stable characteristic equation with unified time delay to obtain a marginally stable characteristic equation for multiple time delays of the cyber-physical power systems under distributed control with unified time delay; in each time delay direction, solving a stable boundary for time delay of the cyber-physical power systems under distributed control; connecting the stable boundaries for time delays in all time delay directions, and generating a stable domain for time delays of the cyber-physical power systems under distributed control.

6. 发明授权

US11239658B2 Dispatching method and device for integrated transmission and distribution network 有权
公开(公告)号：US11239658B2
公开(公告)日：2022-02-01
申请号：US16736313
申请日：2020-01-07
申请人： Tsinghua University
发明人： Wenchuan Wu , Bin Wang , Chenhui Lin , Boming Zhang , Hongbin Sun , Qinglai Guo
IPC分类号： G05D3/12 , G05D5/00 , G05D9/00 , G05D11/00 , G05D17/00 , H02J3/00
摘要： The present disclosure provides a dispatching method and a dispatching device for an integrated transmission and distribution network. The integrated transmission and distribution network include a transmission network and at least one distribution network. The method includes: establishing a dispatch model of the integrated transmission and distribution network; solving the dispatch model to obtain dynamic dispatch parameters for the integrated transmission and distribution network, in which the dynamic dispatch parameters comprise a boundary transferred power from the transmission network to each of the at least one distribution network, and power outputs of all generators in the transmission network and each of the at least one distribution network; and dispatching the integrated transmission and distribution network based on the boundary transferred power and the power outputs of all the generators in the transmission network and each of the at least one distribution network.

7. 发明授权

US11204590B2 State estimation method for heating network in steady state based on bilateral equivalent model 有权
公开(公告)号：US11204590B2
公开(公告)日：2021-12-21
申请号：US16844356
申请日：2020-04-09
申请人： Tsinghua University
发明人： Hongbin Sun , Qinglai Guo , Bin Wang , Tongtian Sheng , Boming Zhang , Wenchuan Wu , Mingye Zhang , Jinni Dong
IPC分类号： G06F11/30 , G05B13/04 , F24D19/10 , G01F1/86
摘要： A state estimation method for a heat supply network in a steady state based on a bilateral equivalent model is provided. The method includes: establishing the bilateral equivalent model based on a mass flow rate in each supply branch of the heating network, a mass flow rate in each return branch of the heating network, a mass flow rate in each connecting branch of the heating network, a pressure and a temperature of each node in the heating network, wherein each heat source is configured as a connecting branch and each heat load is configured as a connecting branch; and repeatedly performing a state estimation on the heating network based on the bilateral equivalent model, until a coverage state estimation result is acquired.

8. 发明授权

US10361561B2 Dispatching method and device for integrated transmission and distribution network 有权
公开(公告)号：US10361561B2
公开(公告)日：2019-07-23
申请号：US15803829
申请日：2017-11-05
申请人： Tsinghua University
发明人： Wenchuan Wu , Boming Zhang , Hongbin Sun , Chenhui Lin , Qinglai Guo , Bin Wang
IPC分类号： H02J3/12 , G05F1/66 , G06F17/11 , G06Q50/06 , H02J3/00
摘要： The present disclosure provides a dispatching method and a dispatching device for an integrated transmission and distribution network. The integrated transmission and distribution network includes a transmission network and at least one distribution network. The method includes: establishing a dispatch model of the integrated transmission and distribution network, in which dispatch model includes an objective function and constraints, the objective function is a minimizing function of a total generation cost of the transmission network and the at least one distribution network under the constraints; solving the dispatch model to obtain dynamic dispatch parameters for the integrated transmission and distribution network; and dispatching the integrated transmission and distribution network according to the dynamic dispatch parameters.

9. 发明授权

US09653920B2 Method for calculating continuation power flow of electric power system 有权
公开(公告)号：US09653920B2
公开(公告)日：2017-05-16
申请号：US14174114
申请日：2014-02-06
申请人： Tsinghua University
发明人： Wenchuan Wu , Boming Zhang , Hongbin Sun , Qinglai Guo , Yuntao Ju
IPC分类号： G05B15/02 , H02J3/06
CPC分类号： H02J3/06
摘要： A method for obtaining a continuous power flow of an electric power system is provided. The method uses the bus having the fastest voltage drop as the local parameterization bus, defines a slope of a line determined by the voltage of the geometric parameterization bus and the load growth factor as the parameterization variable, and adds a one-dimensional geometric parameterization constraint equation near turning points to obtain a nonsingular extended power flow equation, such that the continuation power flow can cross the turning points and a continuous P-V curve can be drawn reliably.

10. 发明授权

US09164499B2 Static security constrained automatic voltage control method 有权
标题翻译：静态安全约束自动电压控制方式
公开(公告)号：US09164499B2
公开(公告)日：2015-10-20
申请号：US13914270
申请日：2013-06-10
申请人： Tsinghua University
发明人： Hongbin Sun , Qinglai Guo , Boming Zhang , Wenchuan Wu , Bin Wang , Mingye Zhang
IPC分类号： G05B15/02 , H02J3/00 , H02J3/06
CPC分类号： G05B15/02 , G06F2217/78 , H02J3/005 , H02J3/06 , H02J3/12 , H02J2003/001 , H02J2003/007 , Y02E40/76 , Y02E60/76 , Y04S10/525 , Y04S10/545 , Y04S40/22
摘要： A static security constrained automatic voltage control method is provided, which includes: performing a single automatic voltage control calculation for a control snapshot of a power system in each control cycle. The single automatic voltage control calculation comprises: obtaining a single-time severe contingency sequencing table and a periodical severe contingency sequencing table from a historical severe contingency information database, and selecting severe contingencies; performing a contingency assessment for the active contingency set, and iterating between a result of the contingency assessment for the active contingency set and a solution of the optimal power flow model to obtain a single automatic voltage control instruction; and performing a contingency assessment for a contingency set, and updating the single-time severe contingency sequencing table and the periodical severe contingency sequencing table according to a comprehensive result of the contingency assessment.
摘要翻译：提供了一种静态安全约束的自动电压控制方法，其中包括：在每个控制周期内对电力系统的控制快照进行单次自动电压控制计算。单次自动电压控制计算包括：从历史严重应急信息数据库获取单次严重应急排序表和周期性严重应急排序表，选择严重意外事件; 对主动应急集合进行应急评估，并对活动应急集合的应急评估结果与最优潮流模型求解获得单个自动电压控制指令之间的迭代; 并对应急组合进行应急评估，根据应急评估的综合结果更新单次严重应急排序表和周期性严重应急排序表。

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