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Recently, the deregulation and liberalization in power market increase the competition in retail and power sector. Therefore power company needs to reduce operational cost and maximizes the profit by operating generator with higher efficiency. On the other hand, energy consumption is increasing rapidly due to the proliferation of all-electric houses. So the controllable load such as electric water heater, heat pump and electric vehicles are introduced to power systems. However conventional system does not operate the thermal unit and controllable load in a coordinated manner. This paper focuses on operating the controllable load, battery and thermal units in a coordinated manner. Furthermore, this paper consider the forecasted error for load demand and renewable energy. The proposed method uses a tabu search for optimization method. Optimizing procedure is divided by two parts. Firstly, actual load is controlled by controllable load and battery. Finally, the schedule of thermal unit commitment problem is decided in the revised load.
Date of Conference: 10-13 Oct. 2010