This first part of this lecture is concerned with the impacts of the wind power integration on the optimal VAR planning and dispatch. For the VAR planning problem, the probabilistic wind power output associated with the capability curve of a doubly fed induction generator (DFIG) based wind farm has been incorporated in the formulation in order to examine its effect on the new VAR devices investment cost and compare the results with the current practice of the regulated power factor range of 0.95 leading and 0.95
lagging. The formulation is stated as an optimization problem so that the objective function is to simultaneously minimize the sum of the annual investment cost of the new VAR devices as well as the annual expected energy loss cost. For the VAR dispatch problem, a security-constrained reactive power scheduling method taking into account the wind power variability is introduced. The reactive power scheduling is supposed to be carried out a day-ahead aiming to the maintaining voltage security for the
hourly forecasted wind power output and its relevant scenarios representing the forecasted wind power errors.
The second part of the lecture introduces an overview of the Egyptian electricity grid and its current associated problems. |
