Optimization scheme for under-voltage load shedding wide-area configuration and substation-area setting

The under voltage load shedding overall scheme is divided into wide area configuration level and station area setting level. They are optimized respectively, to achieve the goal that the scheme is more feasible. In the wide area level, we put forward an optimized selection of the under voltage load shedding location based on risk analysis, which takes into account the system stability after load shedding and the load shedding economy. In the station area level, we determine the setting value and load shedding amount adaptively based on the PV curve (the curve of the quantitative relationship between bus power and bus voltage) and optimize the load shedding sequence based on fuzzy synthetic judgment algorithm by taking advantage of the station area information. The simulation proves that the overall scheme is feasible. ©, 2015, Power System Technology Press. All right reserved.