Patents by Inventor Dai ZHANG

Dai ZHANG 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: 20250079850
    Abstract: A dispatching method and device for an integrated energy system is provided according to the present disclosure. The method includes: constructing an integrated energy system model and simplified component models, performing a rough optimization of a system flexibility with predicted data from renewable energy nodes; determining feasibility constraints according to flexibility optimization results; finally considering operation costs on power and heat generating sides, and implementing a real-time dispatching with real-time data from the renewable energy nodes. The method effectively combines day-ahead scheduling and real-time dispatching by fully utilizing the system flexibility to reduce impacts of prediction errors and achieves strong optimality.
    Type: Application
    Filed: August 28, 2024
    Publication date: March 6, 2025
    Inventors: Wei WEI, Lian Zhu SHAN, Song Jie FENG, Dai ZHANG, Yu IKEMOTO
  • Patent number: 9317929
    Abstract: To achieve space correlation of pixel decomposition results and reduce noise problem caused by isolation, there is provided a decomposition apparatus and method for refining composition of mixed pixels in remote sensing images, including: a preprocessing step for temporarily determining the provability value of the composition ratio of the different land cover types of each pixel in the image, based on a received remote sensing image and spectral information, to obtain first material composition information; and a neighborhood correlation calculation step for analyzing the correlation between a main pixel and the neighboring areas by using the first material composition information of each of the pixels present in the neighboring areas within a predetermined range in which the pixels are adjacent to each other, and optimizing the first material composition information of the main pixel by the result of the correlation analysis, to obtain second material composition information.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: April 19, 2016
    Assignee: HITACHI, LTD.
    Inventors: Dai Zhang, Xue Zhang
  • Publication number: 20130336540
    Abstract: To achieve space correlation of pixel decomposition results and reduce noise problem caused by isolation, there is provided a decomposition apparatus and method for refining composition of mixed pixels in remote sensing images, including: a preprocessing step for temporarily determining the provability value of the composition ratio of the different land cover types of each pixel in the image, based on a received remote sensing image and spectral information, to obtain first material composition information; and a neighborhood correlation calculation step for analyzing the correlation between a main pixel and the neighboring areas by using the first material composition information of each of the pixels present in the neighboring areas within a predetermined range in which the pixels are adjacent to each other, and optimizing the first material composition information of the main pixel by the result of the correlation analysis, to obtain second material composition information.
    Type: Application
    Filed: June 11, 2013
    Publication date: December 19, 2013
    Inventors: Dai ZHANG, Xue ZHANG