—In recent years, the development of the micro-grid
technology is promoted rapidly. In this paper, considering the
fault characteristics of the micro-grid and the insufficiency of
micro-grid relay protection, relay protection of transmission
line applied in the micro-grid based on frequency modulation is
proposed firstly. Then, differences between the micro-grid relay
protection and the traditional one are introduced. After that,
the operational principle and the whole working process of the
frequency modulation are analyzed. Finally, by simulation and
experiments, the novel proposed frequency modulation method
is proved correct and practical.
—Micro-grid, inverter, frequency modulation,
relay protection, frequency conversion.
Yifei Xu, Jiao He, and Dehua Zhang are with the College of Electrical
Engineering, Zhejiang University, China, CO 310013 CHN, China (e-mail:
Huan Ma is with the East China Tongbai Pumped Storage Power Co.,
Ltd., State Grid Xinyuan Company, China, CO 310003 CHN, China (e-mail:
Cite: Yifei Xu, Huan Ma, Jiao He, and Dehua Zhang, "Relay Protection of Transmission Line in the Micro-Grid Based on Frequency Modulation," International Journal of Materials, Mechanics and Manufacturing vol. 3, no. 3, pp. 209-212, 2015.