Abstract
To solve the voltage harmonics and voltage deviation caused by highly penetrated distributed generations (DGs) and power electronic equipment in distribution networks, a two-layer model of the allocation for the voltage detection active power filters (VDAPFs) and static var generators (SVGs) considering reactive power capability and active power curtailment of DG based on the distribution network partition is proposed in this study. First, the network partition based on the defined integrated voltage sensitivity is presented. Dominant nodes that are candidates of VDAPFs and SVGs are obtained based on the single and integrated sensitivity in all regions. Second, the voltage deviation mitigation regions of the DG grid-connected inverters (GCINs) are determined considering the coupling between different GCINs. A curtailment method for DGs active power in and inter regions is proposed. On this basis, a two-layer allocation model is designed. The siting and sizing of VDAPF and SVG are obtained in the upper layer by minimizing the total annual cost. In the lower layer, the power quality level is optimized in each operation scenario by the allocations provided in the upper layer. Finally, case studies on the IEEE 33-bus and PG&E 69-bus systems demonstrate that the proposed strategy is feasible and effective.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call