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1. 发明授权

US11228179B2 Decomposition-coordination voltage control method for wind power to be transmitted to nearby area via flexible DC 有权
公开(公告)号：US11228179B2
公开(公告)日：2022-01-18
申请号：US16848654
申请日：2020-04-14
申请人： TSINGHUA UNIVERSITY , STATE GRID BEIJING ELECTRIC POWER COMPANY , STATE GRID JIBEI ELECTRIC POWER COMPANY
发明人： Bin Wang , Hongquan Ji , Yanling Du , Qinglai Guo , Xijuan Yu , Haitao Liu , Hongbin Sun , Guannan Wang , Mang Jiang , Huaichang Ge , Wenchuan Wu
IPC分类号： H02J3/38 , F03D7/04 , H02P9/04 , H02P101/15
摘要： 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.

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

US11435265B2 Method for estimating state of combined heat and power system 有权
公开(公告)号：US11435265B2
公开(公告)日：2022-09-06
申请号：US16841481
申请日：2020-04-06
申请人： Tsinghua University
发明人： Hongbin Sun , Qinglai Guo , Bin Wang , Tongtian Sheng , Boming Zhang , Wenchuan Wu , Mingye Zhang
IPC分类号： G01M99/00 , G06F1/28 , G06F17/13
摘要： A method for estimating a state of a combined heat and power system is provided. The method include: establishing an objective function; establishing constraints under a steady-state operating stage; converting the objective function and the constraints by utilizing a Lagrangian multiplier to obtain a Lagrange function; obtaining a steady-state estimation result of the combined heat and power system based on the Lagrange function; calculating an energy transmission delay produced by each pipe; establishing a dynamic constraint of each pipe based on the steady-state estimation result and the energy transmission delay; converting the objective function, the constraints, and the dynamic constraint by utilizing the Lagrangian multiplier to update the Lagrange function; obtaining a dynamic-state estimation result of the combined heat and power system during a dynamic-state operating stage of the combined heat and power system based on the updated Lagrange function.

4. 发明授权

US11306923B2 Intra-day rolling scheduling method for integrated heat and electricity system 有权
公开(公告)号：US11306923B2
公开(公告)日：2022-04-19
申请号：US16842566
申请日：2020-04-07
申请人： Tsinghua University
发明人： Hongbin Sun , Qinglai Guo , Bin Wang , Yuwei Chen
IPC分类号： F24D19/10 , G05B17/02 , G06Q10/06 , G06Q50/06 , H02J3/00
摘要： An intra-day rolling scheduling method for an integrated heat and electricity system including: establishing an objective function for scheduling of the integrated heat and electricity system, the objective function aiming to make operating costs of the integrated heat and electricity system to be a minimum; establishing constraints for a steady-state safe operation of the integrated heat and electricity system; and solving the objective function based on the constraints by an interior point method, to obtain an active power and a heating power of each combined heat and power unit, an active power of each thermal power unit, a heating power of each heat pump, and an active power consumed by each circulating pump.

5. 发明授权

US10673237B2 Reactive power optimization method 审中-公开
公开(公告)号：US10673237B2
公开(公告)日：2020-06-02
申请号：US15638648
申请日：2017-06-30
申请人： Tsinghua University
发明人： Wenchuan Wu , Boming Zhang , Hongbin Sun , Chenhui Lin , Bin Wang , Qinglai Guo
IPC分类号： H02J3/20 , H02J3/18 , G06F17/11 , H02J3/00
摘要： A reactive power optimization method for integrated transmission and distribution networks related to a field of operation and control technology of an electric power system is provided. The reactive power optimization method includes: establishing a reactive power optimization model for a transmission and distribution network consisting of a transmission network and a plurality of distribution networks, in which the reactive power optimization model includes an objective function and a plurality of constraints; performing a second order cone relaxation on a non-convex constraint of a plurality of distribution network constraints of the plurality of constraints; and solving the reactive power optimization model by using a generalized Benders decomposition method so as to control each generator in the transmission network and each generator in the plurality of distribution networks.

6. 发明授权

US10359750B2 Frequency control method for micro-grid and control device 有权
公开(公告)号：US10359750B2
公开(公告)日：2019-07-23
申请号：US15375246
申请日：2016-12-12
申请人： Tsinghua University
发明人： Wenchuan Wu , Boming Zhang , Hongbin Sun , Zhongguan Wang , Qinglai Guo , Bin Wang
IPC分类号： G05B19/042 , H02J3/00 , H02J3/38
摘要： The present disclosure provides a frequency control method for a micro-grid and a control device. The method includes: determining a middle parameter at iteration k; determining a local gradient parameter at iteration k according to the cost increment rate at iteration k, the frequency difference between iterations k and k+1, and communication coefficients; performing a quasi-Newton recursion according to the middle parameter and local gradient parameter to acquire a recursion value; determining the cost increment rate at iteration k+1 according to the recursion value; determining an adjustment value of an active power according to the cost increment rate at iteration k+1; adjusting the active power according to the adjustment value if the adjustment value satisfies a constraint condition and judging whether the difference is smaller than a predetermined threshold; executing k=k+1 if yes and stopping the frequency control if no.

7. 发明授权

US09886417B2 Method and apparatus for controlling voltage in wind farm 有权
公开(公告)号：US09886417B2
公开(公告)日：2018-02-06
申请号：US14839949
申请日：2015-08-29
申请人： Tsinghua University
发明人： Qinglai Guo , Hongbin Sun , Bin Wang , Boming Zhang , Wenchuan Wu , Fengda Xu
IPC分类号： G06F17/10 , G05B13/04 , F03D7/02 , F03D7/04
CPC分类号： G06F17/10 , F03D7/028 , F03D7/045 , F05B2270/404 , G05B13/048 , Y02E10/723
摘要： The present disclosure relates to a method and an apparatus for controlling a voltage in a wind farm. The method includes: collecting measured values of parameters as initial values of the prediction values; inputting the initial values into a preset control model for optimizing a model predictive control; solving the preset control model to obtain a first solution sequence of the reactive power setting values of the wind turbines and a second solution sequence of the terminal voltage setting values of the static var generators; and sending first values in the first solution sequence to the wind turbines and first values in the second solution sequence to the static var generators, such that a voltage control in the wind farm is realized.

8. 发明授权

US09342059B2 Automatic voltage control method based on cooperative game theory 有权
标题翻译：基于合作博弈理论的自动电压控制方法
公开(公告)号：US09342059B2
公开(公告)日：2016-05-17
申请号：US13965332
申请日：2013-08-13
申请人： Tsinghua University
发明人： Hongbin Sun , Qinglai Guo , Mingye Zhang , Boming Zhang , Wenchuan Wu , Bin Wang
IPC分类号： G05B11/01 , H02J3/16 , H02J3/00
CPC分类号： G05B11/01 , G06F2217/78 , H02J3/16 , H02J2003/007 , Y02E40/34
摘要： A security and economy coordinated automatic voltage control method based on a cooperative game theory is provided. The method includes: establishing a multi-objective reactive voltage optimizing model of a power system; resolving the multi-objective reactive voltage optimizing model into an economy model and a security model; solving the economy model and the security model based on the cooperative game theory to obtain the automatic voltage control instruction; and performing an automatic voltage control for the power system according to the automatic voltage control instruction.
摘要翻译：提供了一种基于合作博弈理论的安全经济协调自动电压控制方法。该方法包括：建立电力系统的多目标无功电压优化模型; 将多目标无功电压优化模型解决为经济模型和安全模型; 基于合作博弈理论解决经济模型和安全模型，获得自动电压控制指令; 并根据自动电压控制指令对电力系统进行自动电压控制。

9. 发明申请

US20150174440A1 METHOD FOR MECHANOCHEMICAL TREATMENT OF SOLID WASTES CONTAINING PERFLUORINATED OR POLYFLUORINATED COMPOUNDS 有权
标题翻译：含有全氟化合物或多氟化合物的固体废物的机械处理方法
公开(公告)号：US20150174440A1
公开(公告)日：2015-06-25
申请号：US14131689
申请日：2012-09-13
申请人： TSINGHUA UNIVERSITY
发明人： Jun Huang , Kunlun Zhang , Xiaoling Yang , Gang Yu , Shubo Deng , Bin Wang , Yamei Hui , Haizhu Wang
IPC分类号： A62D3/34
CPC分类号： A62D3/34 , A62D2101/22
摘要： A method for mechanochemical treatment of solid wastes containing perfluorinated or polyfluorinated compounds is provided. It belongs to the field of environment-polluting wastes treatment, and comprises the following steps: mixing the solid waste containing perfluorinated or polyfluorinated compounds with the defluorination reagent under normal temperature and pressure conditions, putting the mixture into a planetary high-energy ball milling reactor; adopting the mechanochemical reaction to realize high-effective degradation and defluorination of perfluorinated or polyfluorinated compounds. When being adopted to degrade perfluorinated or polyfluorinated compounds, this method enjoys such advantages as simple treatment procedure, mild reaction conditions (conducted under normal temperature and pressure conditions), lower energy consumption and operating cost, complete degradation and defluorination of the target pollutants, completely inorganic and harmless end products and free of liquid or gas byproducts.
摘要翻译：提供了含有全氟化或多氟化合物的固体废物的机械化学处理方法。它属于环境污染废物处理领域，包括以下步骤：在常温常压条件下将含有全氟化或多氟化合物的固体废物与脱氟试剂混合，将混合物置于行星式高能球磨反应器 ; 采用机械化学反应实现全氟化或多氟化合物的高效降解和脱氟。当采用降解全氟化或多氟化合物时，该方法具有操作简单，反应条件温和（常温常压条件下），降低能耗和运行成本，完全降解和脱氟目标污染物的优点无机和无害的终产物，不含液体或气体副产物。

10. 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.

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