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Abstract - In this paper is presented the simulation of the dispatch of power for a home with controllable loads. The home is supplied from the main power grid and from photovoltaic panels (PV). The power that can be supplied from the main grid is limited. There are considered the cases when the home is supplied with power only from the main power grid, respectively the cases when the home is supplied with power from the PV and main grid. The home has several loads, of which three controllable loads, namely an air conditioning (AC) unit, a washing machine and a fridge. The controllable loads are used to balance the power if the power supplied to the home is not enough.
Keywords: controllable loads; power dispatch; power demand; power grid; photovoltaic panels.
I. INTRODUCTION
The load can be turned on or off when needed for system balance purposes, it is considered as a controllable load.[l]
An example of a controllable load in an electric power system from the operator point of view is the pumping capacities of a pumped hydro storage system or a group of loads whose power supply can be interrupted and/or restricted during peak periods. [1]
A controllable load can also be any load whose power demand can be managed and/or limited, or its operation may be delayed over time.[l]
The researches on controllable loads focused on the following.
An overview of the demand-side resource accomplishments from controllable loads to generalized demand-side resources that included distributed generation and electric energy storage is presented in [2].
Various approaches of the management of controllable loads, respectively the analyzed load characteristics, control strategies and efficacy are presented in [3].
The algorithm for the implementation of a power demand controller was presented in [4]. The controller needed the installed power values and the load factor for the total load and the noncontrollable load.
The control of power system frequency and voltage by controllable loads which were distributed was performed in [5].
The management of microgrid power was presented in [6] considering different cases. The power demand of the microgrid's controllable loafs was either changer or delayed to another time, considering also uncertainties caused by the power supplied from a wind turbine, which were modeled by...