Simulation of Integration of Distributed Generation into Power System Control

Abstract

The paper deals with modeling of theintegration of  distributed  generation  into  the  central  dispatching  system with  regard  to  the  electricity  market  environment.  Due  to  the large  number  of  the  relative  small  unit  power  of  distributed generation the resulting reserve power can achieve a remarkable quantity.   However   the   utilization   of   these   reserves   is   not obvious    because    of    several    technical    issues    like    the cogeneration of heat power, lack of proper informatics, bounds of law about electric energy (LEE) in Hungary etc. An agent based simulation model was developed to discuss the problem. The model consists of the distributed generation units (DG-s)  and  the  DG-concentrator  (DGC)  which  is  an  interface between   DG-s   and   the   independent   transmission   system operator  (TSO).  All  of  them  are  simulated  as  autonomous software units suitable for decision making, learning and multi-direction  communication.  This  is  a  multi-agent  system,  where the   service,   control   and   simulation   of   stochastic   demand variation are easy to study. Several   scenarios   were   discussed   regarding   the   contracts between DG-s and TSO. The financial paragraph of the contract should ensure the willingness of private owned DG-s to provide their   reserves   for   the   central   control.   The   results   of   the simulation  help  to  find  the  minimum  loss  operation  of  the system.