علي صاحبي

In recent years, under the formation of local markets and real-time operation scheduling, optimization and economic power flow have become more difficult from the system operators’ points of view. The local markets growth for the exchange of electrical energy in the power system has increased the existing concerns about maintaining the security of the system and preventing the violation of operating restrictions, such as the occurrence of voltage deviations in the buses and creating overloads of lines. Meanwhile, a new concept as system flexibility has been proposed as a complementary solution to reduce the existing challenges for the system. The flexible use of the existing power systems provides the possibility of economic-technical planning and by using the additional capacities in the system, it uses all the available capacities to create more adaptability in the system. Microgrids operation scheduling, considering the energy exchange of prosumers in local markets, the existence of electrical and thermal energy converter equipment such as heat pumps, combined heat and power unit, and demand response programs will be a flexible planning. Small-scale multi-carrier microgrids with the ability to connect to the distribution system would affect the operation of the distribution network by changing the absorption and injection of power in the bus, which bring new challenges for the system operation. Distributed energy management methods are suitable solutions to use the inherent flexibility of systems to create coordination between a set of independent units with separate operating constraints. In this regard, this thesis proposes a flexible energy scheduling model for multi-carrier microgrids and active distribution network using the alternating direction method of multiplier. In addition to, the current study suggests two new indicators regarding the flexibility eva‎luation of market participants which provide a new model based on bilateral negotiations, while maintaining data security requirements. In order to carry out the studies, four multi-energy microgrids have been investigated. Also, a new demand response model for convertible load has been proposed to improve the flexibility index of the system. To validate the results of the proposed model, the social welfare function in the centralized model has been compared with the distributed model. Keywords: Demand response; Distributed control system; Flexibility Index; Multi energy Microgrid

برنامه هاي مديريت مصرف , ساختار كنترلي توزيع شده , شاخص انعطاف‌پذيري , سيستم‌هاي چندگانه‌ي انرژي

Demand response , Distributed control system , Flexibility Index , Multi energy Microgrid

Ali Sahebi

Dr. Shahram Jadid