Patents by Inventor Feiyi Li

Feiyi Li 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 and device for primary frequency regulation based on bang-bang control
    Patent number: 8907636
    Abstract: The present invention provides a method and a device for primary frequency regulation based on bang-bang control, the method comprises: obtaining in real-time a power grid frequency of a steam turbine generator set; performing a subtraction operation on a rated power grid frequency and said power grid frequency to generate a power grid frequency difference; performing a dead zone process on the power grid frequency difference according to a dead zone fixed value to generate a frequency difference; performing a frequency difference compensation operation on the frequency difference to generate a frequency difference compensation instruction; and combining an original primary frequency regulation output instruction with the frequency difference compensation instruction and outputting the result to a steam turbine speed regulation system when a selecting switch is 1.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: December 9, 2014
    Assignees: North China Electric Power Research Institute Co. Ltd., State Grid Corporation of China
    Inventors: Weihua Li, Zhenyong Yang, Aiguo Gao, Yi Luo, Liankun Lai, Feiyi Li, Yanjin Wang