Statistical models of distributed generation for distribution network planning

The paper presents improvements on short-term network planning of distribution system and distributed generation (DG) at open electricity market. Interconnection of DG is currently based on the worst case principle thus great savings at network investments may be achieved by applying a statistical planning approach. Also an idea of flexible interconnection is introduced which further extends the advantages of statistical planning approach. The approach is applied at existing network information system (NIS) used for distribution network planning. The capability of proposed approach is presented with a real life example and with concept for voltage level management.