Keao Chen

Title: **Keao Chen: Innovating DC Line Protection in Beijing**

Introduction

Keao Chen is an innovative inventor based in Beijing, China. With a focus on improving electrical transmission systems, he has made significant contributions to the field of power engineering.

Latest Patents

Keao holds a patent for a "Method for protecting DC line impedance phase based on protection and control coordination." This invention is designed for application within a three-terminal flexible DC transmission network. The method leverages the high controllability of a converter following a fault. By injecting a characteristic signal at a specific frequency, it calculates the phase angle of input impedance to accurately identify fault intervals, thus enhancing protection performance. This innovation turns traditional passive protection methods into active ones. It operates effectively without being affected by the nonlinearity of the converter.

The benefits of this method are substantial. Unlike a full-bridge Modular Multilevel Converter (MMC), the use of a half-bridge MMC does not require fault ride-through prior to fault identification, eliminating the need for additional equipment. This innovation not only increases the quickness of protection but also offers better economic advantages, ensuring selectivity in the system so that failure of a single line does not lead to total system shutdown.

Career Highlights

Keao Chen is affiliated with Beijing Jiaotong University, where he fosters a collaborative research environment focusing on advancements in power systems and electrical engineering. His academic background and innovative work in the field have established him as a prominent figure in the invention of methods enhancing DC transmission networks.

Collaborations

Throughout his career, Keao has collaborated with esteemed colleagues, including Meng Li and Jinghan He. Their joint efforts contribute to the research and development of cutting-edge technologies in power engineering, further pushing the boundaries of innovation in the field.

Conclusion

In summary, Keao Chen's inventive work and his significant patent highlight the ongoing advancements in protecting DC transmission lines. His research impacts the way electrical systems can operate more reliably and efficiently, ensuring that single-line failures do not hamper entire network operations. As an expert innovator in this domain, Keao continues to inspire future advancements in power engineering.