The paper analyzes network reliability and generator adequacy indicators using Monte Carlo simulation. The reliability indicators are analyzed for the eastern part of the Croatian transmission system and the influence of new combined cogeneration plants on the network reliability. All simulations were conducted with DIgSILENT PowerFactory software tool which uses two types of algorithms - state enumeration method and Monte Carlo simulation method. Firstly, two conditions of the transmission system were analyzed - the condition with the maximum and the condition with the minimum time varying load along with the comparison of the network reliability indicators. Then, new constructed combined-cogeneration plants connected at 400 kV busbars were compared to the combined-cogeneration plants of smaller size connected to the different point in the network at 110 kV busbars. Results were compared and analyses show that the option with three CCGT is better than option of one huge CCGT plant placed in Ernestinovo or Slavonski Brod.
Development and application of probabilistic criteria in value-based transmission system adequacy assessment
