Linzhi Yao

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One of the important issues of concerns for gas-insulated switchgear (GIS) is the generation of very fast transient overvoltage (VFTO) during switching operations, especially at operational voltage levels of 330 kV and beyond. It becomes extremely important to build an arc model for VFTO simulation, since the arc determines VFTO characteristics to a great(More)
During switching operations of disconnectors in gas insulated switchgear (GIS), very fast transient overvoltage (VFTO) is generated due to multiple strikes across the switching contact. Switching properties, such as switching speed and trapped charge, have some impacts on VFTO behavior. In this paper, the VFTO caused by switching operations of a(More)
Resonator fiber-optic gyro (RFOG) is a high-accuracy inertial rotation sensor based on the Sagnac effect. A high-accuracy resonant frequency servo loop is indispensable for a high-performance RFOG. It is composed of a frequency discriminator, a loop filter, and a laser actuator. Influences of the loop parameters are fully developed. Optimized loop(More)
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