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公开(公告)号：US09906030B2
公开(公告)日：2018-02-27
申请号：US14655235
申请日：2014-04-18
申请人： GANSU ELECTRIC POWER CORPORATION WIND POWER TECHNOLOGY CENTER , STATE GRID GANSU ELETRIC POWER CORPORATION , STATE GRID CORPORATION OF CHINA , NORTH CHINA ELECTRIC POWER UNIVERSITY
发明人： Ningbo Wang , Wenying Liu , Dan Jin , Jiaming Wang , Yanhong Ma , Cai Liang , Long Zhao , Yalong Li , Qiang Zhou , Jing Wen , Rong Huang , Rundong Ge , Jin Li , Peng Xu
CPC分类号： H02J3/16 , H02J3/38 , H02J3/383 , H02J3/386 , H02J13/0006 , Y02E10/563 , Y02E10/763 , Y02E40/34 , Y02E40/72 , Y02E60/723 , Y02E60/726 , Y04S10/123 , Y04S10/16 , Y04S10/24 , Y10T307/549
摘要： The present invention has disclosed an optimal control method for reactive voltage of wind power and photovoltaic power centralized grid connection in the field of wind power and photovoltaic power grid connection control technology, comprising: setting actuating stations used to control single wind power plant/photovoltaic power plant, setting substations used to control actuating stations and set master station used to control all the substations; master station calculates setting voltage reference Uref of each substation; adopting 3σ method to process set voltage reference Uref to obtain set voltage reference interval; regulating high-side voltage of substation to make it fall in set voltage reference interval; if high-side voltage of substation does not fall in set voltage reference interval, then regulating the equipment in wind power plant/photovoltaic power plant via actuating station. The present invention guides the actual operations of electric power system.
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2.发明授权公开(公告)号：US09667066B2
公开(公告)日：2017-05-30
申请号：US14649202
申请日：2014-04-16
申请人： GANSU ELECTRIC POWER CORPORATION WIND POWER TECHNOLOGY CENTER , STATE GRID GANSU ELETRIC POWER CORPORATION , STATE GRID CORPORATION OF CHINA , NORTH CHINA ELECTRIC POWER UNIVERSITY
发明人： Ningbo Wang , Wenying Liu , Yanhong Ma , Jiaming Wang , Dan Jin , Cai Liang , Shiyuan Zhou , Xiaodan Wu , Kun Ding , Zilan Zhao , Qiang Zhou , Bin Yang , Jin Li , Peng Xu , Long Zhao , Rundong Ge
CPC分类号： H02J3/00 , H02J3/386 , H02J3/46 , Y02E10/763 , Y10T307/549
摘要： The present invention has disclosed a wind power bundling control method after wind power and thermal power are connected to a power grid in the field of electric power system security technology, including regulating wind power output and thermal power output forward or backward; calculating the transient stability margin of the grid, load level index of element and voltage out-of-limit index of busbar after regulating wind power output and thermal power output respectively; calculating wind power/thermal power paying value according to the transient stability margin of the grid, load level index of element and voltage out-of-limit index of busbar after regulating wind power output and thermal power output; if wind power/thermal power paying value is larger than set threshold value, regulating wind power output and thermal power output backward/forward; if wind power/thermal power paying value is smaller than set threshold value, regulating wind power output and thermal power output forward/backward. The present invention provides a wind power bundling control method after wind power and thermal power are connected to the power grid to ensure reasonable output of wind power and thermal power, so as to guarantee the power grid operates normally.
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公开(公告)号：US09903896B2
公开(公告)日：2018-02-27
申请号：US14905279
申请日：2014-04-02
申请人： GANSU ELECTRIC POWER CORPORATION WIND POWER TECHNOLOGY CENTER , STATE GRID GANSU ELETRIC POWER CORPORATION , STATE GRID CORPORATION OF CHINA
发明人： Ningbo Wang , Liang Lu , Duo Wang , Shiyuan Zhou , Yuhong Zhang , Kun Ding , Dan Jin , Long Zhao , Shien He , Xushan Han , Yanhong Ma , Qiang Zhou , Dingmei Wang , Hongquan Xu , Guangtu Liu , Xiaoyong Wang , Jin Li , Ming Ma , Jinping Zhang , Rong Huang , Qingquan Lv , Jianmei Zhang
IPC分类号： G01R13/04 , G01R21/133 , G06F17/50 , G06F11/26 , G01R21/00
CPC分类号： G01R21/1331 , G01R21/003 , G06F11/26 , G06F17/5009
摘要： The present invention discloses a testing method for dynamic model parameters of a wind power plant, wherein under testing conditions including stable running of wind turbine generators and reactive-load compensation equipment, stable wind speed between a cut-in wind speed and a rated wind speed, and the wind power plant output smaller than a rated output, finishes a wind speed transient disturbance test, a wind power plant unit tripping and inputting disturbance test, a wind power plant power change test, a disturbance test for reactive-load compensation equipment of the wind power plant, a tripping disturbance test for hydroelectric power plant and thermal power plant near the wind power plant and a manual single-phase ground short circuit test at the outgoing line part of the wind power plant, and records running curves of the wind power plant under each condition to finish the parameter test. The present invention realizes the advantage of providing precise measurement data for the stability analysis of an electric power system and the production dispatching of a power grid.
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4.发明授权公开(公告)号：US10037502B2
公开(公告)日：2018-07-31
申请号：US14648249
申请日：2014-04-02
申请人： STATE GRID CORPORATION OF CHINA , STATE GRID GANSU ELECTRIC POWER CORPORATION , GANSU ELECTRIC POWER CORPORATION WIND POWER TECHNOLOGY CENTER
发明人： Ningbo Wang , Ming Ma , Yanhong Ma , Guangtu Liu , Long Zhao , Qiang Zhou , Dingmei Wang , Liang Lu , Jianmei Zhang , Qingquan Lv
CPC分类号： G06Q10/06312 , F03D80/50 , F05B2270/20 , G06Q10/20 , G06Q50/06 , Y02E10/72 , Y02E40/76 , Y04S10/54 , Y04S10/545
摘要： The present invention discloses a maintenance schedule optimization method for an electric power system including large-scale wind power to build objective function to make it get optimal results, then constrain the objective function, constraint conditions include: constrain according to maintenance natural environment; constrain according to maintenance time of wind power plant; constrain according to maintenance site of wind power plant; constrain according to system reliability at wind power plant; constrain according to maintenance continuity of generator unit. Under the above constraint conditions, the electric power system is modeled with heuristic algorithm according to the above objective function. Through modeling the electric power system including large-scale wind power, optimize maintenance time of wind turbines in electric power system through modeling under a certain constraint conditions to maintain the wind power equipment properly while ensuring maximum efficiency of wind power generation at the same time.
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5.发明授权公开(公告)号：US09793713B2
公开(公告)日：2017-10-17
申请号：US14649532
申请日：2014-03-28
发明人： Ningbo Wang , Chongru Liu , Long Zhao , Yi Ding , Zhongyi Liu , Yanhong Ma , Dan Wang , Dan Jin , Wenying Liu , Shiyuan Zhou , Kun Ding , Qiang Zhou , Jin Li
摘要： A method for improving system small disturbance stability after double-fed unit gets access to the system belongs to the field of electric power system operation and control technology. A sensitivity analysis is adopted to optimize parameter, through making sensitivity analysis on the non-ideal dominant mode happens to the system to find out several nonzero elements that are most sensitive to this mode in system matrix; elements of state matrix is adopted to replace the elements of system matrix to make analysis so as to find out the most relevant parameter set; setting parameters change in the interval to observe track for the change of eigenvalues of corresponding mode and then balancing and optimizing system parameters comprehensively according to the change of eigenvalues. Without adding other control means, the present invention can improve dominant modal damping caused by selecting improper controller parameters or system parameters after double-fed unit gets access to the system without increasing cost; as this method is also highly targeted, exhaustive efforts for all the adjustable parameters of the system can be avoided, which not only greatly decreases workload, but also improves computational efficiency, so that it is very instructive.
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6.发明授权公开(公告)号：US11199863B2
公开(公告)日：2021-12-14
申请号：US16398806
申请日：2019-04-30
申请人： STATE GRID JIANGSU ELECTRIC POWER CO., LTD , STATE GRID CORPORATION OF CHINA , STATE GRID JIANGSU ELECTRIC POWER COMPANY RESEARCH INSTITUE , SOUTHEAST UNIVERSITY
发明人： Jijun Yin , Zuofeng Li , Gang Chen , Zhenyu Chen , Haifeng Li , Yefeng Jiang , Lin Liu , Qifeng Huang , Shufeng Lu , Bin Yang , Haowei Zhang , Xiao Chen , Qiang Zhou , Mingfeng Xue , Lingying Huang , Shihai Yang , Qingshan Xu , Minrui Xu , Zhixin Li , Shuangshuang Zhao , Feng Wang , Wenguang Chen
摘要： Provided is a user side load response method based on adjustment and control on temperature of load clusters. The user side load response method includes: performing thermodynamic modeling on a temperature control load to obtain a temperature control model in direct load control; constructing a mapping quantity to describe the change state of a temperature control load relay switch; obtaining adjustable capacity of the temperature control load through the mapping quantity; introducing temperature control load clusters to solve the problem that control precision cannot satisfy condition requirements; and finally calculating the influence of each load cluster in different load cluster control schemes on comfort degree.
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公开(公告)号：US12027857B2
公开(公告)日：2024-07-02
申请号：US17372458
申请日：2021-07-10
申请人： STATE GRID GANSU ELECTRIC POWER RESEARCH INSTITUTE , STATE GRID GANSU ELECTRIC POWER COMPANY , State Grid Qinghai Electric Power Research Institute , State Grid Qinghai Electric Power Company , State Grid Corporation of China
发明人： Jien Niu , Qiang Zhou , Yanqi Zhang , Junhong Duan , Long Zhao , Diangang Hu , Jianjun Wu , Jinping Zhang , Zhicheng Ma , Xushan Han , Jun Song , Qingquan Lv , Ruixiao Zhang , Yanhong Ma , Jianmei Zhang , Guodong Wu , Pengfei Gao , Chengjia Bao , Weicheng Shen , Jin Li , Kequan Liu , Xiaodong Pang
CPC分类号： H02J3/0012 , G05B13/042 , G06N3/126 , H02J13/00002
摘要： A method for controlling peak saving by wind power grid. The method includes: S1: evaluating dispatchability of a cluster virtual wind power unit; S2: developing a method for calculating a dispatchability index of the cluster virtual wind power unit; S3: analyzing a source-load peak-shaving resource strategy; and S4: distributing a control strategy for tie-line peak shaving. The present disclosure has the following beneficial effects: In the present disclosure, real-time dispatchability of wind power participating in real-time power balance is first analyzed, specific evaluation indexes and calculation methods are provided, and calculation examples are given for verification. Then, an optimized real-time dispatch strategy is provided based on demand-side response resources, and DC and AC tie-lines are coordinated for operation. The peak shaving control method for emergent source-grid coordination when a sending-end power grid is faulty can ensure normal operation.
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公开(公告)号：US20230299585A1
公开(公告)日：2023-09-21
申请号：US18018577
申请日：2021-06-10
申请人： STATE GRID GANSU ELECTRIC POWER RESEARCH INSTITUTE , STATE GRID GANSU ELECTRIC POWER COMPANY , State Grid Qinghai Electric Power Research Institute , State Grid Qinghai Electric Power Company , State Grid Corporation of China
发明人： Qiang Zhou , Yanhong Ma , Yanqi Zhang , Yue Wu , Ningbo Wang , Zhicheng Ma , Xushan Han , Guogang Jin , Long Zhao , Qingquan Lv , Dingmei Wang , Jinping Zhang , Pengfei Gao , Ruixiao Zhang , Jianmei Zhang , Jin Li , Zhenzhen Zhang , Lijuan Liu , Senlin Yang , Jun Kang , Rui Song
CPC分类号： H02J3/144 , H02J3/003 , H02J3/004 , H02J3/381 , H02J2310/60 , H02J2300/20 , H02J2203/10 , H02J2203/20
摘要： Disclosed is a coordinated peak shaving optimization method for a plurality of power supplies based on a fluctuation characteristic of a renewable energy source, including the following steps: s1: determining a weekly generated electricity quantity of hydropower based on an available capacity and a storage capacity of an electricity quantity; s2: predicting a renewable energy power generation curve and a load curve of a system weekly; s3: determining a start point of peak shaving of the hydropower based on an external transmission curve, the renewable energy generation curve, and the load curve of the system and a generating capacity of the hydropower; s4: determining a weekly peak shaving demand of the system; and s5: establishing an optimization model with a maximum peak shaving demand. The present disclosure proposes a reasonable arrangement for peak shaving, so as to resolve an accommodation problem caused by large-scale access of a renewable energy source.
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公开(公告)号：US20220037884A1
公开(公告)日：2022-02-03
申请号：US17372458
申请日：2021-07-10
申请人： STATE GRID GANSU ELECTRIC POWER RESEARCH INSTITUTE , STATE GRID GANSU ELECTRIC POWER COMPANY , State Grid Qinghai Electric Power Research Institute , State Grid Qinghai Electric Power Company , State Grid Corporation of China
发明人： Qiang Zhou , Yanhong Ma , Yanqi Zhang , Yue Wu , Ningbo Wang , Zhicheng Ma , Xushan Han , Guogang Jin , Long Zhao , Dingmei Wang , Qingquan Lv , Jinping Zhang , Pengfei Gao , Ruixiao Zhang , Jianmei Zhang , Jin Li , Zhenzhen Zhang , Lijuan Liu , Yue Fan , Xiaokan Gou , Xuebin Wang
摘要： A peak shaving control method for emergent source-grid coordination in case of a faulty sending-end power grid. The method includes: S1: evaluating dispatchability of a cluster virtual wind power unit; S2: developing a method for calculating a dispatchability index of the cluster virtual wind power unit; S3: analyzing a source-load peak-shaving resource strategy; and S4: distributing a control strategy for tie-line peak shaving. The present disclosure has the following beneficial effects: In the present disclosure, real-time dispatchability of wind power participating in real-time power balance is first analyzed, specific evaluation indexes and calculation methods are provided, and calculation examples are given for verification. Then, an optimized real-time dispatch strategy is provided based on demand-side response resources, and DC and AC tie-lines are coordinated for operation. The peak shaving control method for emergent source-grid coordination when a sending-end power grid is faulty can ensure normal operation.
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