Patents by Inventor Dongshan HUANG

Dongshan HUANG 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).

  • Method for calculating oscillation damping ratio of power grid
    Publication number: 20220349924
    Abstract: The present invention disclosed a method for calculating an oscillation damping ratio of a power grid, and relates to the field of power system operation and control. When a power system oscillates, an oscillation period, two oscillation extreme points, and an oscillation direct current component start to be detected. Then an oscillation decay time constant is calculated according to the two oscillation extreme points and the oscillation direct current component. The oscillation damping ratio is calculated through the oscillation decay time constant and the oscillation period. Compared with a conventional fitting method, the conventional fitting method cannot calculate and analyze the oscillation damping ratio in a cast that a complete oscillation waveform is not obtained. The method proposed by the present inventive patent may complete the calculation of the oscillation damping ratio in a case of obtaining 2 pieces of data, so as to accelerate the speed of calculation.
    Type: Application
    Filed: September 4, 2020
    Publication date: November 3, 2022
    Inventors: Yihui ZHANG, Libin WEN, Guangshi LIU, Qian DOU, Dongshan HUANG, Xiaoming WANG, Zhiyuan SUN, Guangling LU, Mingpo LI, Mosi LIU, Hao QIU, Xiaoyin QIU, Zhiyang YAO, Wei ZHANG
  • Well constrained horizontal variable H-V curve constructing method for seismic wave velocity field construction
    Patent number: 8868348
    Abstract: A well constrained transverse variable height-velocity curve constructing method for seismic wave velocity field construction involves the steps of: a) calculating interval velocity of each stratum by a sonic logging curve, and calculating the conversion horizon velocity of each horizon; b) drawing a circle to collect well points; c) calculating the characteristic parameter values of the height-velocity curve by the interval velocity and the conversion interval velocity of each well; d) calculating the characteristic parameter values by Kriging interpolation.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: October 21, 2014
    Assignee: China National Petroleum Corporation
    Inventors: Yalin Li, Guangmin Hu, Guangming He, Jun Wu, Dongshan Huang, Qiubo Wu, Wanxue Xie
  • WELL CONSTRAINED HORIZONTAL VARIABLE H-V CURVE CONSTRUCTING METHOD FOR SEISMIC WAVE VELOCITY FIELD CONSTRUCTION
    Publication number: 20120053841
    Abstract: A well constrained horizontal variable height-velocity curve constructing method for seismic wave velocity field construction involves the steps of: a) calculating horizon velocity of each horizon by a sonic logging curve, and calculating the conversion horizon velocity of each horizon; b) drawing a circle to collect well points; c) calculating the characteristic parameter values of the height-velocity curve by the horizon velocity and the conversion horizon velocity of each well; d) calculating the characteristic parameter values by Kriging interpolation.
    Type: Application
    Filed: October 13, 2011
    Publication date: March 1, 2012
    Applicant: CHINA NATIONAL PETROLEUM CORPORATION
    Inventors: Yalin LI, Guangmin HU, Guangming HE, Jun WU, Dongshan HUANG, Qiubo WU, Wanxue XIE