Pinghao Ni

Title: Innovations by Pinghao Ni: Pioneering Patents in DC Transmission Technology

Introduction

Pinghao Ni is an inventor based in Beijing, China, renowned for his significant contributions to the field of electrical engineering and specifically to DC transmission technology. With three patents to his name, his work focuses primarily on improving the performance and reliability of modular multilevel converters (MMC) within flexible DC transmission networks.

Latest Patents

Pinghao Ni's most recent patents encompass innovative methods aimed at enhancing the protection and control of DC lines. One such patent, titled "Method for protecting DC line impedance phase based on protection and control coordination," introduces a unique approach to fault identification in three-terminal flexible DC transmission systems. This method leverages the high controllability of converters post-fault, utilizing a characteristic frequency to inject signals and calculate input impedance phase angles, enabling precise fault interval determination. This innovation not only enhances protection performance but also transitions from passive to active methods, unimpacted by converter nonlinearity, resulting in quicker fault identification and improved economic benefits.

Another notable patent is the "Steady state fault current calculation method for modular multilevel converter." This invention delineates a systematic approach for calculating steady-state fault currents in MMCs by analyzing critical resistance values associated with the converter's operation. This method ensures accurate fault current amplitude and phase angle calculations under varying operational modes, significantly contributing to better safety and efficiency within power systems.

Career Highlights

Pinghao Ni is associated with Beijing Jiaotong University, a prominent institution contributing to research and development in electrical engineering. His work has paved the way for technological advancements in the field, addressing critical issues related to fault management and reliability in DC transmission networks.

Collaborations

In his journey as an inventor, Pinghao Ni collaborates with esteemed colleagues Meng Li and Jinghan He, who contribute valuable insights and support in their shared research endeavors. Together, they drive innovation within their field, enhancing the overall performance of power systems.

Conclusion

Pinghao Ni’s inventions represent significant advancements in DC line protection and modular multilevel converter technology. His innovative methods not only improve the efficiency and reliability of energy systems but also showcase a commitment to addressing complex challenges in electrical engineering. Through his patents and collaborations, Ni continues to influence the future of DC transmission technology, ensuring safer and more reliable energy solutions.