Model Makers

Planning studies are conducted both to incorporate design modifications to the transmission and distribution system and to ensure continued reliable operation of the system. Validated PV system models are required to account for the effect of existing PV generation, evaluate the potential impact of proposed projects, and assess technical options for integrating even larger PV generation capacity in the future. There is a need to improve PV system models used for all four aspects of distribution and transmission system planning: power flow, dynamic, short-circuit, and transient. Planning models need to be more accessible to meet technical and process requirements of the interconnection and regional planning processes. Some industry efforts are under way, notably by the WECC, to address gaps in PV system modeling. Further progress will require continued support by utilities, manufacturers, and software developers.