Patents by Inventor Hongwen Liu

Hongwen Liu 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).

  • Publication number: 20250104795
    Abstract: Examples of the present disclosure provide a memory device, a memory system and an operation method of the memory system, and a storage medium. The memory device includes: multiple word lines, where a plurality of strings coupled to each of the word lines are divided into a first string area and a second string area; and at least one redundant stripe corresponding to each of the word lines, where the redundant stripe comprises a first redundant stripe which is configured to store first check data. The first check data is obtainable by performing error correction coding on data in a first string area of a word line where the first redundant stripe is located and data in a second string area of a word line adjacent to the word line where the first redundant stripe is located.
    Type: Application
    Filed: January 10, 2024
    Publication date: March 27, 2025
    Inventors: Feiyang ZHANG, Hongwen LIU
  • Publication number: 20250070685
    Abstract: The system and method for unbalanced current adjustment from capacity increase and phase-splitting output of distribution transformer according to embodiments of the present invention are provided, in which the system for unbalanced current adjustment from capacity increase and phase-splitting output of distribution transformer includes a single-phase transformer, a single-phase bridge rectifier, and a three-phase full-bridge inverter. The high-voltage side of the single-phase transformer is connected to the high-voltage side of the distribution transformer. The single-phase bridge rectifier connected to the low-voltage side of the single-phase transformer converts the AC power from the single-phase transformer into the DC power for the three-phase full-bridge inverter. The three-phase full-bridge inverter is connected to the three-phase lines through the three-phase reactors.
    Type: Application
    Filed: February 14, 2023
    Publication date: February 27, 2025
    Inventors: Jindong YANG, Hongwen LIU, Fei RONG
  • Publication number: 20250070557
    Abstract: Embodiments of this invention discloses a split-phase output power adjustment system, adjustment method, and storage medium in a low voltage transformer area. The system includes adjustment power supplies, split-phase power adjustment modules, sub-controllers, a main controller. The adjustment power supplies connected to the split-phase power adjustment modules, and total power P of the adjustment power supplies complying with a relationship as follows: P=Pt=PG1+PG2+ . . . . PGn; wherein Pt is power required to comply with three-phase current unbalance adjustment of a distribution transformer, PG1, PG2, . . .
    Type: Application
    Filed: February 14, 2023
    Publication date: February 27, 2025
    Inventors: Jindong YANG, Hongwen LIU, Fei RONG, Xufeng LI, Junpeng DANG, Jisheng HUANG, Penghui YANG
  • Patent number: 12237663
    Abstract: The embodiments of the present invention disclose a line protection method and a related apparatus for a flexible grounding system of a power distribution network. The method comprises outputting a first compensation voltage by a voltage source of a flexible grounding device of each line of a target power distribution network in the case where a ground fault occurs in the target power distribution network; starting to calculate the zero-sequence impedance of each line in real time by the zero-sequence impedance protection device; after the first compensation voltage is output for a first output duration, outputting a second compensation voltage; calculating the zero-sequence impedance of each line in real time by the line zero-sequence impedance protection device; determining a fault line by the zero-sequence impedance protection device, and cutting off the fault line to isolate the ground fault after a trip for a preset time delay.
    Type: Grant
    Filed: March 9, 2023
    Date of Patent: February 25, 2025
    Assignee: Electric Power Research Institute of Yunnan Power Grid Co., Ltd
    Inventors: Hongwen Liu, Xianping Zhao, Jindong Yang, Chenchao Chai, Lijun Tang, Ding Nie, Quancong Zhu, Yongjie Nie, Dexu Zou, Shaolei Zhai, Zhilei Zhang
  • Publication number: 20240385830
    Abstract: Examples of the present disclosure discloses an operation method, a memory system, a system, and a readable storage medium. The memory system includes a communication interface configured to: receive an executable file in a set format; and wherein the executable file comprising: a file header and a plurality of pieces of executable code; each of the plurality of pieces of executable code comprising code segment data and a code segment header; and the code segment header being configured to indicate a memory location of the code segment data in the memory system.
    Type: Application
    Filed: September 22, 2023
    Publication date: November 21, 2024
    Inventors: Wanqiang Tao, Hongwen Liu
  • Publication number: 20240380209
    Abstract: In the present invention, a system and a method for unbalance adjustment for inverter split-phase controlling and distribution transformer current are provided, in which the system for unbalance adjustment for inverter split-phase controlling and distribution transformer current includes a distributed power supply and a three-phase full-bridge inverter. The three-phase full-bridge inverter is connected to the distributed power supply, and the three-phase full-bridge inverter is connected to a three-phase line through a three-phase reactor. When an unbalance degree corresponding to the three-phase line is greater than a preset starting value, a three-phase compensation current reference value is obtained according to the present front-end three-phase load current, back-end three-phase load current and capacitor voltage control component, such that the three-phase full-bridge inverter can output the three-phase compensation current based on the three-phase compensation current reference value.
    Type: Application
    Filed: February 14, 2023
    Publication date: November 14, 2024
    Inventors: Jindong YANG, Hongwen LIU, Fei RONG
  • Publication number: 20230361552
    Abstract: The embodiments of the present invention disclose a line protection method and a related apparatus for a flexible grounding system of a power distribution network. The method comprises outputting a first compensation voltage by a voltage source of a flexible grounding device of each line of a target power distribution network in the case where a ground fault occurs in the target power distribution network; starting to calculate the zero-sequence impedance of each line in real time by the zero-sequence impedance protection device; after the first compensation voltage is output for a first output duration, outputting a second compensation voltage; calculating the zero-sequence impedance of each line in real time by the line zero-sequence impedance protection device; determining a fault line by the zero-sequence impedance protection device, and cutting off the fault line to isolate the ground fault after a trip for a preset time delay.
    Type: Application
    Filed: March 9, 2023
    Publication date: November 9, 2023
    Applicant: Electric Power Research Institute of Yunnan Power Grid Co., Ltd
    Inventors: Hongwen Liu, Xianping Zhao, Jindong Yang, Chenchao Chai, Lijun Tang, Ding Nie, Quancong Zhu, Yongjie Nie, Dexu Zou, Shaolei Zhai, Zhilei Zhang
  • Publication number: 20230280386
    Abstract: A method and a system for locating a fault of a complex power line are provided. Several monitoring points on the complex power line can be obtained by providing several traveling wave head monitoring sensors on the complex power line. The complex power line is transformed into coordinates in conjunction with an arrival moment and a location corresponding to the monitoring points, thereby establishing a trunk line fault-locating equation related to a line location, the arrival moment, and a traveling wave propagation speed, from which a first fault point can thus be derived simply and quickly. If a fault point is located on a branch line, a branch line fault-locating equation is then established to derive a second fault point. Furthermore, the first fault point and the second fault point serve as a basis for deriving a target fault point of the complex power line.
    Type: Application
    Filed: March 1, 2023
    Publication date: September 7, 2023
    Applicant: Electric Power Research Institute of Yunnan Power Grid Co., Ltd
    Inventors: Hongwen Liu, Xiangjun Zeng, Jindong Yang, Hao Bai, Ding Nie, Jisheng Huang, Lijun Tang, Guochao Qian, Dexu Zou, Xincui Tian
  • Publication number: 20230280388
    Abstract: The embodiments of the present invention disclose a method and a related device for locating a ring power network fault. The method comprises: expanding in each ring line segment with an arbitrary point as a coordinate origin in a ring power network to construct a plurality of reference coordinate systems; acquiring monitoring point coordinate information and wavehead arrival time information of each of the monitoring point positions; acquiring assumed fault point information; acquiring a traveling wave propagation speed; constructing a plurality of distributed fault location equation sets according to the monitoring point coordinate information, the wavehead arrival time information, the assumed fault point information and the traveling wave propagation speed in each of the reference coordinate systems; and determining an actual fault position according to a solution result of each of the distributed fault location equation sets and the assumed fault section.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 7, 2023
    Applicant: Electric Power Research Institute of Yunnan Power Grid Co., Ltd.
    Inventors: Hongwen Liu, Xianping Zhao, Jindong Yang, Chenchao Chai, Lijun Tang, Ding Nie, Quancong Zhu, Yongjie Nie, Dexu Zou, Shaolei Zhai, Zhilei Zhang
  • Patent number: 11366163
    Abstract: The present invention relates to a solid testing platform and method for function testing of an intelligent phase-change switch. The testing platform includes a primary controller, a first module, a second module, a capacitor C, an intelligent phase-change switch, and a transformer. The primary controller is respectively connected to the first module and the second module, and is configured to control the operation of the first module and the second module. The first module and the second module are connected in parallel to the capacitor C. the first module is configured to feed back excess energy of the capacitor C to a distribution network. The second module is configured to control magnitude and direction of a current that flows through the intelligent phase-change switch. The capacitor C is configured to perform energy support, filtering, and smoothing.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: June 21, 2022
    Assignee: LINCANG POWER SUPPLY BUREAU YUNNAN POWER GRID CO., LTD.
    Inventors: Wen Li, Huan Chen, Hongwen Liu, Jisheng Huang, Jindong Yang, Kang Yao
  • Publication number: 20220043063
    Abstract: The present invention relates to a solid testing platform and method for function testing of an intelligent phase-change switch. The testing platform includes a primary controller, a first module, a second module, a capacitor C, an intelligent phase-change switch, and a transformer. The primary controller is respectively connected to the first module and the second module, and is configured to control the operation of the first module and the second module. The first module and the second module are connected in parallel to the capacitor C. the first module is configured to feed back excess energy of the capacitor C to a distribution network. The second module is configured to control magnitude and direction of a current that flows through the intelligent phase-change switch. The capacitor C is configured to perform energy support, filtering, and smoothing.
    Type: Application
    Filed: November 13, 2020
    Publication date: February 10, 2022
    Applicant: LINCANG POWER SUPPLY BUREAU YUNNAN POWER GRID CO., LTD.
    Inventors: Wen LI, Huan CHEN, Hongwen LIU, Jisheng HUANG, Jindong YANG, Kang YAO
  • Publication number: 20180073233
    Abstract: Disclosed is a body cleaner for a closestool, comprising water spray devices having a body cleaning function, fixing devices for fixing the water spray devices, and silicone hoses for providing a water flow, wherein water inlet ends of the silicone hoses are connected to a tap water pipe, and water outlet ends thereof are connected to the water spray devices; the fixing devices are arranged on the rear end of an opening of the closestool and fixed on the inner wall of the opening of the closestool; the height of the water outlet ends of the silicone hoses in the vertical direction can be adjusted; and the water spraying devices are provided with at least one nozzle which inclines upwards to form a 45-degree angle, and the nozzle is properly aligned with the front upper end of the opening of the closestool.
    Type: Application
    Filed: November 27, 2015
    Publication date: March 15, 2018
    Inventor: Hongwen LIU
  • Patent number: 7605279
    Abstract: Provided is a production process by which a novel alicyclic oxetane compound which has an oxetane ring, has excellent light transmission in the near ultraviolet region, and is useful as a cationically polymerizable monomer can be easily obtained. The production process which is for obtaining an alicyclic oxetane compound includes subjecting an aromatic oxetane compound to nuclear hydrogenation in high-pressure hydrogen in the presence of a hydrogenation catalyst. For example, when 4,4?-bis[(3-ethyloxetan-3-yl)methoxymethyl]biphenyl is used as the aromatic oxetane compound, 4,4?-bis[(3-ethyloxetan-3-yl)methoxymethyl]bicyclohexyl is obtained as the alicyclic oxetane compound.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: October 20, 2009
    Assignee: Nippon Steel Chemical Co., Ltd.
    Inventors: Takehiro Shimizu, Kiyotaka Onishi, Hongwen Liu
  • Publication number: 20070167637
    Abstract: Provided is a production process by which a novel alicyclic oxetane compound which has an oxetane ring, has excellent light transmission in the near ultraviolet region, and is useful as a cationically polymerizable monomer can be easily obtained. The production process which is for obtaining an alicyclic oxetane compound includes subjecting an aromatic oxetane compound to nuclear hydrogenation in high-pressure hydrogen in the presence of a hydrogenation catalyst. For example, when 4,4?-bis[(3-ethyloxetan-3-yl)methoxymethyl]biphenyl is used as the aromatic oxetane compound, 4,4?-bis[(3-ethyloxetan-3-yl)methoxymethyl]bicyclohexyl is obtained as the alicyclic oxetane compound.
    Type: Application
    Filed: February 15, 2005
    Publication date: July 19, 2007
    Applicant: Nippon Steel Chemical Co., Ltd.,
    Inventors: Takehiro Shimizu, Kiyotaka Onishi, Hongwen Liu