Probablistic Load Flow Of a Distributed Generation Connected Power System By Two Point Estimate Method

摘要

The modern power system demands more (DG) distributed generation system connected to the power system because of high demand issues. Taking the environmental concern the DG is chosen to be environmental friendly. The generation capacity of such DG are variable because of the source of the energy is highly variable. To connect such system to the exiting power system a analysis must be done to check the distribution system is working perfectly well as per our desire. The probabilistic load flow(PLF) approach is very useful in this scenario to obtain the possible as well as more accurate results. This work explains the solution of various problems of load flow when PV DG's are connected to the system. For the daily operation and for the planning and design purposes the load flow analysis is required. Without considering the uncertainty in load demand, change in the network configuration and outage of generating units, deterministic load flow carries out the calculations where as the probabilistic load flow approach takes all these uncertainties and the solution is obtained in a range which directly proportional to the probability of occurrence.