INFLUENCE OF THE INCLUSION OF STORAGE IN GRID-CONNECTED DOMESTIC PV-SYSTEMS ON THE PREDICTABILITY OF THE POWER EXCHANGE WITH THE GRID

摘要

The inclusion of storage in grid-connected PV-systems sets new challenges to the forecast of the power flows from and to the grid, as instantaneous PV-production - currently predictable with reasonable accuracy - and power feed-in to the grid gets decoupled. Forecast schemes of the power flows have to include details of the storage system as size and control strategy. In this paper gives results from a simulation study on the operation of PV-Systems focusing on the deviation of forecasted and actual power flows for systems with storages operating with different control schemes.