Some aspects of distributed generation — Voltage drop and energy storage

Present paper examines two aspects of distributed generation. The first part focuses on the question of local voltage control. A Hungarian village is modelled using DIgSILENT PowerFactory for simulation. A possible method is investigated to keep control of the voltage values, and it is shown, that energy injection of distributed generators can result even in the overloading of the MV/LV transformer without exceeding voltage limits. Second part of the paper focuses on the question of a local storage facility, for an 800 kW wind generator. After the statistical processing of the measurement data, the aim is to set a possible storage strategy in order to decrease the amount of energy injected into the grid during the off-peak period of the night. The determination of the size of the storage facility is followed by the examination of different types of storage systems that can be suitable for this task.