A Method for Improving Resilience of Distribution Network Taking into Account the Control Strategy of Grid-connected Inverters
Different control strategies of grid-connected inverters will affect the output performance of distributed generation(DG).In order to make full use of its flexible control potential,this paper proposes a method to improve the resilience of distribution network taking into account the control strategy of grid-connected inverters of DG.Firstly,a distribution network resilience improvement framework considering the control strategy of grid-connected inverters is constructed.On this basis,the output characteristics of DG under different control strategies of grid-connected inverters are analyzed,and the output performance of DG under the isolated island and grid-connected mode is defined.Secondly,considering the difference of response ability of DG in grid-connected mode and isolated island mode,a distribution network resilience enhancement model is established,which takes the minimum active power deficit of the system as the objective function,and considers the operation constraints in grid-connected mode and frequency safety in isolated island mode.Finally,a case analysis is carried out based on the improved IEEE 33 node distribution network to verify the effectiveness of the proposed resilience enhancement method.
distribution networkresilience improvementdistributed generationgrid-connected invertergrid-followinggrid-forming
万方数据
维普
