Research of Urban Rail Transit Power Quality

With the rapid development of urban rail transit, as well as the construction of the smart grid, the power quality of rail transport has received more attention from both power suppliers and users. It is a complex and systematic project to control the power quality problem effectively for involving many factors. Perfect power quality management system is the key to guarantee the security, stability, and economic operation of the grid. The paper introduces the background and current situation of power quality management system, gives the analysis method and evaluation of it, and at last puts forward the architecture and functions of management system which greatly improves the work efficiency.