Integration of Solar Power Plants to Grid with Optimal Connection Criteria and Energization of Critical Loads in Island Mode Operation

The improvements and additional equipment implementation demand for the conventional grids are on increase as a result of the increase of the number of renewable power plants and smart grid components. The effect of the renewable power plants on the grid are on increase exponentially as the increase on the number of the renewable power plants. In order to keep the grid stable and integrate the renewables to the grid optimally, necessary analysis have to be realized and the optimal integration criteria have to be investigated carefully. The other optimal integration factors are eligibility for island mode operation and energization of critical loads during a possible fault event along with grid stability and voltage regulation criteria. In this study, IEEE 13 bus test system is built in simulation environment as a district model along with a solar power plant (SPP) model and the SPP is integrated to existing district network. The optimal integration criteria of maintaining voltage regulation in a reasonable level, reducing line losses and the eligibility of island mode operation are investigated during the study steps. The optimal integration criteria are met as the result of the analysis on the simulated grid model and SPP integration study along with energization of critical loads during a grid blackout