Abstract:
Power system deregulation which could happen in the future for Thailand is an essential issue to be studied. However such trading under the new structure has not come into practice yet. Therefore, the study of factors influencing electricity prices and other concerns in the system can be done by means of a computer simulation. A complicated issue in the simulation is that how we cope with price bidding and offering from electricity producers and retailers respectively. In this developed framework, genetic algorithm is employed so that market participants can adjust their bid and offer prices corresponding to their market strategies, i.e. maximize benefit of company. In this thesis, the study focuses on electricity trading in a bilateral market, which can be divided into 2 trading periods, the advanced agreement based on bilateral contact and the Balancing Mechanism (BM). The study focuses on factors having impact on the long-term price set in both periods, i.e. traded energy volume, the accuracy of contracted energy, and the number of buyers and sellers. In addition, the study takes into account operating cost, system configuration, and transmission line congestion. Optimal power flow is applied for energy dispatch. Then, the impact of transmission congestion on electricity prices is analyzed. The simulation results may lead to the improvement of system operation and the optimal prices bid and offered by market participants