Wei Yan

Title: Wei Yan: Innovator in Relay Protection Methods

Introduction

Wei Yan is a notable inventor based in Jiangsu, China. He has made significant contributions to the field of electrical engineering, particularly in relay protection methods. With a total of 3 patents to his name, his work focuses on enhancing the reliability and safety of electrical systems.

Latest Patents

Wei Yan's latest patents include a relay protection method and apparatus against LC parallel circuit detuning faults. This innovative method involves a relay protection device that samples the current of a parallel LC circuit, which consists of a reactor and a capacitor. The device calculates the amplitude of the total current flowing through the LC and sends an alarm signal or trips the system if the current ratio exceeds preset limits.

Another significant patent is the frequency-conversion differential protection method for the output transformer of a static frequency converter system. This method measures three-phase currents at each side of the output transformer and employs a protection algorithm that is unaffected by frequency changes. This advancement greatly improves the sensitivity of internal failure detection in output transformers, making it suitable for large-scale frequency changes.

Career Highlights

Wei Yan has worked with reputable companies such as Nr Electric Co., Ltd and Nr Engineering Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in relay protection technologies.

Collaborations

Throughout his career, Wei has collaborated with talented individuals, including Jun Chen and Qixue Zhang. These partnerships have contributed to the successful development of his patents and innovations.

Conclusion

Wei Yan's contributions to relay protection methods demonstrate his commitment to advancing electrical engineering. His innovative patents reflect a deep understanding of complex electrical systems and a dedication to improving their safety and reliability.