Power quality management platform for smart grid

The development tendency of power quality monitoring system is analyzed and a power quality management platform based on present power quality system is proposed.In addition to the power quality assessment,more functions are developed:power quality early warning,harmonic power flow,weak link/disturbance source identification,power quality trend forecast,comprehensive management measures and dynamic simulation.The outlier mining technology is adopted to detect the abnormal or limit-violating data in the power quality early warning module.Four-level setting-related warning strategy is proposed for the steady-state and transient power quality index and the relevant warning library of characteristic events is established.The power quality trend forecast and the management strategy of dynamic simulation module are introduced to the platform.The concept to apply this platform to the power quality management and control of premium power park is presented.Its power quality assessment module and power quality early warning module have been put into operation in power grid.