Research on the multi-function equipment of custom power park

The future custom power park will realize the hierarchical power supply of different voltage quality grade, meanwhile and present the grid-friendly characteristics including low pollution for grid, organic combination with distributed generation (DG) and energy storage (ES). In order to gradually achieve the goals, the function reuse and integration in the equipment level should be solved firstly. It means the fusion among power quality equipments, DGs and ES in the equipment level. However, the research on series and parallel combination operation mode among some same or different types of custom power equipments, which could provide the basis for a variety of combination way of realization, provide the convenient and flexibility to deploy the functions of different equipments. It needs to study of problem which the share series or parallel connected converter among power quality equipments, DGs and ES. To seek a smooth switching method between variety of functions and status, and a coordination control method to balance functions of the grid generation, short-term support and power quality regulation. In this paper, mathematical models about custom power equipments are proposed and analysis is provided to show the principal and effect of interactions. Meanwhile the configuration guidelines for the different equipments are given and a novel integration strategy is proposed. Finally, simulation results are provided to verify the analysis.