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Recently, many distributed generators have been connected to a power system. These may cause a large current if some system fault occurs in the power system, therefore a short-circuit capacity of the power system should be carefully considered. However, the short-circuit capacity also depends on a line impedance. A large line impedance will suppress the increase of short-circuit capacity, but it will...
Increasing nonlinear loads result in a voltage distortion on an electric power distribution line. Installation of an active filter can be one of the solutions to mitigate the line voltage distortion, but it requires additional costs. On the other hand, many photovoltaic (PV) systems become interconnected to the distribution system in Japan. There is some surplus capacity of the inverter in accordance...
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