TECHNICAL-ECONOMICAL EVALUATION OF DIFFERENT SCENARIOS FOR THE INTEGRATION OF DECENTRALIZED RENEWABLE GENERATION INTO RURAL 110 KV NETWORKS

Due to the change of the public power supply system, the requirements of rural distribution networks will change significantly. The high degree of decentralized renewable energy leads to higher equipment loading and reverse power flows. The future tasks thus require new measures. This paper describes the development of different forecast scenarios for decentralized generation and the study of the resulting challenges of integration in a rural 110 kV network. At the beginning, future scenarios are developed under consideration of various existing studies. The different future expectations are then implemented in a 110 kV PSS®SINCAL network model, so that a future network scenario in 2050 can be evaluated. The technical evaluation is made by performing load flow calculations. Different network reconfigurations are analyzed and four solutions are developed. For the economical evaluation, the base scenario is expanded and four more scenarios are developed. Finally, an economical analysis of different variants and scenarios makes it possible to identify future needs.