Spatial-Temporal PV Hosting Capacity Estimation and Evaluation

Zhongqi Zhao, Yiyun Yao, Lei Fan, Fei Ding

Research output: Contribution to conferencePaper

Abstract

Evaluating Photovoltaic Hosting Capacity (PVHC) is an essential step in the process of integrating solar energy into power grids, particularly when focusing on the distribution network (DN) as the primary integration target. PVHC needs to be investigated, especially in cases where the grids are unbalanced, and their operational conditions vary spatially and temporally. This motivation prompted us to propose a scalable model tailored to this application. In this paper, we applied linearization to the alternating current optimal power flow (AC-OPF) and solar inverters, transforming the original problem into a mixed-integer linear programming (MILP) problem. Additionally, we accounted for the battery energy storage system (BESS) as a time-coupling factor for calculating PVHC. We then compared the PVHC results between the IEEE-13 bus and SMART-DS San Francisco (SFO) cases and discussed the extent to which BESS can enhance the PVHC of a DN. Furthermore, we designed a web-based graphical visualization for the SFO case, enabling user interaction with raw data and simulation results on a map through a graphical user interface (GUI). In summary, our results and findings provide valuable insights for future three-phase unbalanced AC-OPF PVHC practices and their visualization.
Original languageAmerican English
Number of pages5
DOIs
StatePublished - 2024
Event2024 IEEE Power & Energy Society General Meeting - Seattle, Washington
Duration: 21 Jul 202425 Jul 2024

Conference

Conference2024 IEEE Power & Energy Society General Meeting
CitySeattle, Washington
Period21/07/2425/07/24

NREL Publication Number

  • NREL/CP-5D00-92066

Keywords

  • AC-optimal power flow
  • PV host capacity
  • three-phase unbalanced distribution network

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