Patents by Inventor Xingguo Wang
Xingguo Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10778003Abstract: A method of free wave energy protection for a half-wavelength line based on a one-sided current includes: performing sampling and calculation on a current at protection measuring points to obtain variations in current sampling values; and activating a protective element to determine an occurrence time of a fault in a half-wavelength line. A free wave energy protection section includes a quick-action section, a basic section and a sensitive section, wherein the quick-action section, the basic section and the sensitive section serve as action criteria for performing protection with respect to the free wave energy of the half-wavelength line.Type: GrantFiled: July 18, 2016Date of Patent: September 15, 2020Assignees: CHINA ELECTRIC POWER RESEARCH INST. CO. LIMITED, STATE GRID CORPORATION OF CHINA, STATE GRID CENTRAL CHINA GRID COMPANY LTD.Inventors: Huanzhang Liu, Zexin Zhou, Dingxiang Du, Yarong Guo, Xiao Li, Xuming Liang, Delin Wang, Xingguo Wang
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Patent number: 10605852Abstract: A concomitant impedance protection method for a half-wavelength power transmission line includes that: three-phase currents and three-phase voltages of a relay protection device mounting position at an M side and a relay protection device mounting position at an N side of the half-wavelength power transmission line are acquired respectively; it is judged whether starting amounts of an M side and an N side meet starting conditions or not; a failure point F is determined according to a time difference when the starting amounts of the M side and the N side meet the starting conditions; and a relay protection action of the half-wavelength power transmission line is started according to concomitant impedance of the half-wavelength power transmission line.Type: GrantFiled: June 30, 2016Date of Patent: March 31, 2020Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA, CENTRAL CHINA BRANCH OF STATE GRID CORPORATION OF CHINAInventors: Dingxiang Du, Huanzhang Liu, Zexin Zhou, Xuming Liang, Yarong Guo, Xingguo Wang, Lianhai Li, Delin Wang, Xiao Li, Xiangwen Chen
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Publication number: 20190343439Abstract: An injection needle includes a needle hub and a needle tube. The needle hub is connected to a safety protective cover by an elastic flip mechanism. Two symmetrically-distributed needle hub hooks are provided on a side wall of the needle hub. Two symmetrically-distributed protective cover snaps are provided in a hollow inner cavity of the safety protective cover. The two protective cover snaps cooperates with the two needle hub hooks. Protective cover snap stoppers are provided on outer sides of the two protective cover snaps. The injection needle employs the two needle hub hooks disposed on the side wall of the needle hub and cooperate with the two protective cover snaps disposed in the inner cavity of the safety protective cover.Type: ApplicationFiled: December 15, 2016Publication date: November 14, 2019Applicant: BERPU MEDICAL TECHNOLOGY CO., LTDInventor: Xingguo WANG
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Publication number: 20190013667Abstract: A method of free wave energy protection for a half-wavelength line based on a one-sided current includes: performing sampling and calculation on a current at protection measuring points to obtain variations in current sampling values; and activating a protective element to determine an occurrence time of a fault in a half-wavelength line. A free wave energy protection section includes a quick-action section, a basic section and a sensitive section, wherein the quick-action section, the basic section and the sensitive section serve as action criteria for performing protection with respect to the free wave energy of the half-wavelength line.Type: ApplicationFiled: July 18, 2016Publication date: January 10, 2019Inventors: Huanzhang Liu, Zexin Zhou, Dingxiang Du, Yarong Guo, Xiao Li, Xuming Liang, Delin Wang, Xingguo Wang
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Publication number: 20180364292Abstract: A concomitant impedance protection method for a half-wavelength power transmission line includes that: three-phase currents and three-phase voltages of a relay protection device mounting position at an M side and a relay protection device mounting position at an N side of the half-wavelength power transmission line are acquired respectively; it is judged whether starting amounts of an M side and an N side meet starting conditions or not; a failure point F is determined according to a time difference when the starting amounts of the M side and the N side meet the starting conditions; and a relay protection action of the half-wavelength power transmission line is started according to concomitant impedance of the half-wavelength power transmission line.Type: ApplicationFiled: June 30, 2016Publication date: December 20, 2018Applicants: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA, CENTRAL CHINA BRANCH OF STATE GRID CORPORATION OF CHINAInventors: Dingxiang Du, Huanzhang Liu, Zexin Zhou, Xuming Liang, Yarong Guo, Xingguo Wang, Lianhai Li, Delin Wang, Xiao Li, Xiangwen Chen
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Patent number: 10093881Abstract: The present invention provides a method for vegetable oil deacidification by enzymatic amidation, which relates to the field of oil refining technology. The present invention is carried out through mixing high acid value vegetable oil with ethanolamine at a certain molar ratio in a solvent or solvent-free system, adding with a certain amount of lipase, and reacting at certain temperature for a period of time. The monoethanolamine has been used as an acyl donor for the first time to react with free fatty acid, which avoids the increasing amount of by-products and great loss of neutral oil in reaction that involved with triglycerides. The method of the present invention has the advantages of high selectivity, high catalytic efficiency, and environment friendly in the reaction. From enzymes recycling, it greatly reduces costs, which shows tremendous potential in the application.Type: GrantFiled: September 19, 2016Date of Patent: October 9, 2018Assignee: Jiangnan UniversityInventors: Xingguo Wang, Xiaosan Wang, Qingzhe Jin, Jiyuan Lu
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Publication number: 20170317489Abstract: The invention provides a method for overcoming the influence of out-flowing current on bus differential protection. The method comprises the following steps: acquiring and processing branch current signals; selecting a fault bus, and determining the branch current with maximum amplitude from branches connected with the fault bus; calculating differential current and restraint current of a large differential element, and determining whether the large differential element acts. The method for overcoming the influence of out-flowing current on bus differential protection does not need to reduce the braking coefficient during splitting operation in a two-bus connecting mode, can adaptively improve the sensitivity of bus differential protection under an internal fault in the presence of out-flowing current, and simultaneously ensures the reliability under an external fault.Type: ApplicationFiled: August 24, 2015Publication date: November 2, 2017Applicants: STATE GRID CORPORATION OF CHINA, CHINA ELECTRIC POWER RESEARCH INSTITUTE, CENTER CHINA GRID COMPANY LIMITEDInventors: Dingxiang DU, Huanzhang LIU, Zexin ZHOU, Xingguo WANG
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Publication number: 20170158983Abstract: The present invention provides a method for vegetable oil deacidification by enzymatic amidation, which relates to the field of oil refining technology. The present invention is carried out through mixing high acid value vegetable oil with ethanolamine at a certain molar ratio in a solvent or solvent-free system, adding with a certain amount of lipase, and reacting at certain temperature for a period of time. The monoethanolamine has been used as an acyl donor for the first time to react with free fatty acid, which avoids the increasing amount of by-products and great loss of neutral oil in reaction that involved with triglycerides. The method of the present invention has the advantages of high selectivity, high catalytic efficiency, and environment friendly in the reaction. From enzymes recycling, it greatly reduces costs, which shows tremendous potential in the application.Type: ApplicationFiled: September 19, 2016Publication date: June 8, 2017Inventors: Xiaosan Wang, Jiyuan Lu, Qingzhe Jin, Xingguo Wang
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Patent number: 9337689Abstract: A power supply system and a method for controlling the same are disclosed. The power supply system includes: a first AC source and a second AC source; a circuit switching module; a controllable AC/DC conversion module electrically coupled to the circuit switching module; a subsequent stage power supply module electrically coupled to the controllable AC/DC conversion module; and a control module electrically coupled to the circuit switching module and the controllable AC/DC conversion module, and when failure occurs in any one of the first AC source and the second AC source, configured to control the circuit switching module to switch to the other one of the first AC source and the second AC source which is in normal operation. By employing the power supply system and the method for controlling the same provided by the present application, the cost may be reduced and the reliability may be increased.Type: GrantFiled: March 16, 2013Date of Patent: May 10, 2016Assignee: DELTA ELECTRONICS, INC.Inventors: Hongguang Liu, Yaoning Xia, Xingguo Wang, Kai Dong
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Publication number: 20140077602Abstract: A power supply system and a method for controlling the same are disclosed. The power supply system includes: a first AC source and a second AC source; a circuit switching module; a controllable AC/DC conversion module electrically coupled to the circuit switching module; a subsequent stage power supply module electrically coupled to the controllable AC/DC conversion module; and a control module electrically coupled to the circuit switching module and the controllable AC/DC conversion module, and when failure occurs in any one of the first AC source and the second AC source, configured to control the circuit switching module to switch to the other one of the first AC source and the second AC source which is in normal operation. By employing the power supply system and the method for controlling the same provided by the present application, the cost may be reduced and the reliability may be increased.Type: ApplicationFiled: March 16, 2013Publication date: March 20, 2014Applicant: DELTA ELECTRONICS, INC.Inventors: Hongguang Liu, Yaoning Xia, Xingguo Wang, Kai Dong
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Patent number: 8658401Abstract: Disclosed is a method for preparing L-?-Glycerylphosphorylcholine with high yields and purity. The method uses phospholipase A1-based enzymatic hydrolysis, ion-exchange resin purification and silica gel column chromatography to prepare L-?-glycerylphosphorylcholin with purity up to 99.8% and a final yield up to 78.4%. The method disclosed is simple, cost-effective, environmentally friendly, and adaptable to industrial applications.Type: GrantFiled: March 24, 2011Date of Patent: February 25, 2014Assignee: Jiannan UniversityInventors: Yuanfa Liu, Kangyi Zhang, Xingguo Wang, Xiangyun Qian, Li Zhou, Zhihua Song
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Publication number: 20120244583Abstract: Disclosed is a method for preparing L-?-Glycerylphosphorylcholine with high yields and purity. The method uses phospholipase A1-based enzymatic hydrolysis, ion-exchange resin purification and silica gel column chromatography to prepare L-?-glycerylphosphorylcholin with purity up to 99.8% and a final yield up to 78.4%. The method disclosed is simple, cost-effective, environmentally friendly, and adaptable to industrial applications.Type: ApplicationFiled: March 24, 2011Publication date: September 27, 2012Inventors: Yuanfa Liu, Kangyi Zhang, Xingguo Wang, Xiangyun Qian, Li Zhou, Zhihua Song
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Patent number: 7428339Abstract: A method for real-time video encoding includes buffering frames in an encoder input buffer, retrieving the frames from the encoder input buffer, encoding the retrieved frames into a bit stream, monitoring the encoder input buffer for buffer overflow, and, if the encoder input buffer is about to overflow, encoding one of the retrieved frames as a pseudo-frame that completely references one reference frame of the one retrieved frame. Encoding one of the retrieved frames as a pseudo-frame bypasses a majority of the encoding procedures to improve the overall encoding speed. The method further includes monitoring a hypothetical decoder input buffer that models an actual decoder input buffer in a video decoder, encoding one of the retrieved frames with a pseudo-frame if the hypothetical decoder input buffer is about to underflow, and adding stuffing bits to the bit stream if the hypothetical decoder input buffer is about to overflow.Type: GrantFiled: November 7, 2003Date of Patent: September 23, 2008Assignee: ArcSoft, Inc.Inventors: Xingguo Wang, Guobin Chen, Lingxiang Zhou
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Publication number: 20060155701Abstract: A method for block matching includes performing a first search for a matching block in a frame using a search pattern centered at a first center point and determining a best point that produces a close match. If the best point does not produce a match satisfying a criterion, the method further includes storing the first center point in an array, setting the best point as a second center point, and performing a second search using the search pattern centered at the second center point. Performing the second search includes (1) at least approximating distances between (a) points in the search pattern centered at the second center point and (b) center points stored in the array; (2) excluding any point that has at least one distance less than a threshold; and (3) performing the second search for remaining points in the search pattern centered at the second center point.Type: ApplicationFiled: January 13, 2005Publication date: July 13, 2006Inventors: Xiaojie Huang, Xingguo Wang
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Publication number: 20050100231Abstract: A method for real-time video encoding includes buffering frames in an encoder input buffer, retrieving the frames from the encoder input buffer, encoding the retrieved frames into a bit stream, monitoring the encoder input buffer for buffer overflow, and, if the encoder input buffer is about to overflow, encoding one of the retrieved frames as a pseudo-frame that completely references one reference frame of the one retrieved frame. Encoding one of the retrieved frames as a pseudo-frame bypasses a majority of the encoding procedures to improve the overall encoding speed. The method further includes monitoring a hypothetical decoder input buffer that models an actual decoder input buffer in a video decoder, encoding one of the retrieved frames with a pseudo-frame if the hypothetical decoder input buffer is about to underflow, and adding stuffing bits to the bit stream if the hypothetical decoder input buffer is about to overflow.Type: ApplicationFiled: November 7, 2003Publication date: May 12, 2005Inventors: Xingguo Wang, Guobin Chen, Lingxiang Zhou