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1.发明授权公开(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.
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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.
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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
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.
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4.发明授权公开(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
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.
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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
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.
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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
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.
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公开(公告)号：US09229082B2
公开(公告)日：2016-01-05
申请号：US13676184
申请日：2012-11-14
申请人： Tsinghua University
发明人： Hua Guo , Feng Huang , Xiaodong Ma , Wenchuan Wu , Chun Yuan
IPC分类号： G01R33/561 , G01R33/563 , G01R33/48
CPC分类号： G01R33/5611 , G01R33/4824 , G01R33/56341
摘要： A method for diffusion magnetic resonance imaging may be provided. The method may comprise steps of performing sampling on an object at N diffusion weighted directions to acquire undersampled but complementary k-space data, combining the complementary data from different directions to obtain a full sampled k-space data, performing initial reconstruction based on common information among images at the N diffusion weighted directions, and performing joint iterative regularized reconstruction to k-space data in all diffusion weighted directions based on the initial images to obtain the desired final images. Due to the utilization of common information at the N diffusion weighted directions, the acquisition efficiency may be enhanced and image resolution and SNR of acquired images may be improved accordingly.
摘要翻译： 可以提供扩散磁共振成像的方法。 该方法可以包括在N个扩散加权方向上对对象执行采样以获取欠采样但互补的k空间数据的步骤，组合来自不同方向的互补数据以获得全采样k空间数据，基于公共信息执行初始重建 在N个扩散加权方向的图像中，并且基于初始图像对所有扩散加权方向中的k空间数据执行联合迭代正则化重建以获得期望的最终图像。 由于在N个扩散加权方向上利用公共信息，可以提高采集效率，并且可以相应地提高所获取的图像的图像分辨率和SNR。
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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
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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公开(公告)号：US20140091793A1
公开(公告)日：2014-04-03
申请号：US13676184
申请日：2012-11-14
申请人： Tsinghua University
发明人： Hua Guo , Feng Huang , Xiaodong Ma , Wenchuan Wu , Chun Yuan
IPC分类号： G01R33/561
CPC分类号： G01R33/5611 , G01R33/4824 , G01R33/56341
摘要： A method for diffusion magnetic resonance imaging may be provided. The method may comprise steps of performing sampling on an object at N diffusion weighted directions to acquire undersampled but complementary k-space data, combining the complementary data from different directions to obtain a full sampled k-space data, performing initial reconstruction based on common information among images at the N diffusion weighted directions, and performing joint iterative regularized reconstruction to k-space data in all diffusion weighted directions based on the initial images to obtain the desired final images. Due to the utilization of common information at the N diffusion weighted directions, the acquisition efficiency may be enhanced and image resolution and SNR of acquired images may be improved accordingly.
摘要翻译： 可以提供扩散磁共振成像的方法。 该方法可以包括在N个扩散加权方向上对对象执行采样以获取欠采样但互补的k空间数据的步骤，组合来自不同方向的互补数据以获得全采样k空间数据，基于公共信息执行初始重建 在N个扩散加权方向的图像中，并且基于初始图像对所有扩散加权方向中的k空间数据执行联合迭代正则化重建以获得期望的最终图像。 由于在N个扩散加权方向上利用公共信息，可以提高采集效率，并且可以相应地提高所获取的图像的图像分辨率和SNR。
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公开(公告)号：US11616371B2
公开(公告)日：2023-03-28
申请号：US17328373
申请日：2021-05-24
发明人： Qinglai Guo , Hongbin Sun , Nianfeng Tian , Wenchuan Wu , Bin Chen , Jianye Huang
摘要： The disclosure provides a method for calculating a parameter changing domain of loads under a case that guarantees a constant locational marginal price in an electricity market, which relates to the electricity market field of the power system. With the method in the disclosure, the clearing model on the locational marginal price in the general form is established, and the safe changing domain of the locational marginal price with respect to the loads may be derived and calculated based on the first-order KKT condition expansion of the clearing model on the locational marginal price in the general form. When the increment of the nodal loads is subordinate to the changing domain, the locational marginal price may remain unchanged. The parameter changing domain of loads in the power system may be used for the comprehensive evaluation of power market clearing results and assisting the operation of the power market.
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