Xiaohua Tang

Title: Xiaohua Tang and a Power Quality Controller for Substations.

Introduction

Xiaohua Tang is an inventor associated with Xi’an Jiaotong University in Xi’an, China. Her work includes an invention designed to improve power quality in electric power substations.

Latest Patents

The available information lists 1 patent for Tang: “Comprehensive Power Quality Controller for Substation in Power System.” The invention combines a Thyristor Controlled Reactor (TCR), a tuned passive filter, an active power filter (APF), an additional inductor, and a coupling transformer. Together, these components provide capacitive reactive power and filter harmonics generated by electrical loads and the TCR system.

The design uses the TCR to provide inductive reactive power and control the APF as a current source. The APF’s capacity is described as less than one percent of the harmonic source capacity, offering a low-cost approach with a simple and reliable control mode. The system is also intended to reduce the effects of background harmonics on the passive filter and prevent resonance between the filter and the power grid impedance.

Career Highlights

Tang’s listed patent addresses power quality challenges in substations through a hybrid filtering system. Her affiliation with Xi’an Jiaotong University connects this work to the university’s research and innovation community.

Collaborations

The provided information identifies Wanjun Lei and Zhaoan Wang as Tang’s coworkers.

Conclusion

Xiaohua Tang’s patented controller combines active and passive filtering with reactive power control to address harmonics and resonance in electric power substations.