Practices and Challenge on Planning with Large-scale Renewable Energy Grid Integration

With the increasing penetration of the wind and solar generation in the power grid, the renewable energy integration planning and evaluation are essential for a more comprehensive understanding of power system operational economics. For specific power grid, the maximum feasible renewable integration capacity can be calculated and thus provide the useful guidelines for government, independent system operators and investors to make planning and operational decisions toward higher penetration of renewable power: Planning study and electrical system design should be done before actual construction of the wind and solar power plant. The planning studies generally analysis the adequacy and flexibility of the power system, which including resource characteristics analysis, production simulation and reliability analysis. The Electrical system design generally analysis the connection mode and stability, which including interconnection and transmission design, power flow and stability analysis, power quality analysis. In technical aspect, modeling, methodologies and evaluation indices related to integration planning and evaluation are the most important parts should be considered in future activities.