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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：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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3.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：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：US10277033B2
公开(公告)日：2019-04-30
申请号：US15446097
申请日：2017-03-01
申请人： Tsinghua University
发明人： Wenchuan Wu , Boming Zhang , Xin Chen , Hongbin Sun , Qinglai Guo , Bin Wang
摘要： The present disclosure provides a method and a device for controlling a distributed generator in a distribution system. The method includes: extracting a first statistic feature of a load at each bus; extracting a second statistic feature of a distributed generator at each bus; establishing a probability distribution set of each first and second statistic feature; determining security constraints of the distribution system; obtaining a bilinear matrix inequality constraint by using a C-VaR approximation algorithm and a duality algorithm based on the probability distribution set and on the security constraints; determining an objective function to maximize a total installed capacity of the distributed generators; solving the objective function according to the bilinear matrix inequality constraint to obtain an installed capacity of each distributed generator; and controlling an access of each distributed generator according to the installed capacity. The method may take full use of statistic features and has higher practicability.
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公开(公告)号：US10241532B2
公开(公告)日：2019-03-26
申请号：US14850657
申请日：2015-09-10
申请人： Tsinghua University
发明人： Hongbin Sun , Qinglai Guo , Bin Wang , Boming Zhang , Wenchuan Wu , Huaichang Ge
摘要： 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.
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公开(公告)号：US10146193B2
公开(公告)日：2018-12-04
申请号：US15609510
申请日：2017-05-31
申请人： Tsinghua University
发明人： Wenchuan Wu , Boming Zhang , Zihao Li , Hongbin Sun , Bin Wang , Qinglai Guo
IPC分类号： F24F11/00 , G05B13/04 , G05D23/19 , G05F1/66 , F24F11/30 , F24F11/62 , F24F11/54 , H02J3/14 , F24F110/00 , F24F140/50
摘要： The present disclosure relates to a method for primary frequency regulation of an electric network based on large building air conditioning loads cluster. The method includes the use of a two layer control structure with a central coordinating layer and a local control layer. Each local controller performs a thermal model parameter identification and a local air conditioning autonomous control, and uploads local information to the central controller at the end of each communication interval tgap, the central controller broadcasts coordinating information to each local controller. Based on the coordinating information sent from the central controller, each local controller determines whether a power deviation is beyond an action dead zone at the beginning of each action period tact, if beyond, then perform a frequency regulation control action, else, perform no action and estimate operation states of all the air conditionings at the beginning of the next action period.
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10.发明授权公开(公告)号：US10079490B2
公开(公告)日：2018-09-18
申请号：US14835144
申请日：2015-08-25
申请人： Tsinghua University
发明人： Qinglai Guo , Hongbin Sun , Bin Wang , Boming Zhang , Wenchuan Wu , Tao Niu
CPC分类号： H02J3/12 , H02J3/18 , H02J3/386 , Y02E10/763 , Y02E40/30
摘要： Disclosed are a method and a device for determining safe threshold for power grid voltage of a wind farm converging area, The method includes: obtaining ground state voltage; obtaining upper and lower limit voltage of the output bus, first lower and upper limit of reactive powers of fans and compensation devices, and lower and upper limit of active power fluctuations; obtaining second lower and upper limit of reactive powers of fans and compensation devices; determining whether voltage error is greater than a predetermined threshold; replacing the first lower and upper limit of the reactive powers of fans and the reactive powers of compensation devices with the second lower and upper limit of reactive powers of fans and compensation devices respectively, and repeating above steps if the voltage error is greater than the predetermined threshold, else defining the upper and lower limit voltage of the output bus as a safe threshold.
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