Abstract
It is of prime importance to introduce distributed generators which can utilize new energy in order to improve the energy and environment issues. When a distribution network has a large amount of distributed generators, voltage maintenance becomes one of serious problems. To solve this problem, the authors have proposed “voltage profile control method” using reactive power control of inverters in previous works. However, in the previous papers, it is supposed that active power of distributed generators must be decreased when the reactive power of inverter increases because the case in which the inverter has no reserve capacity for reactive power control is treated. In reality, it is natural that the inverter has reserve capacity because the inverter capacity is determined in order to satisfy the maximum output of distributed generator. Therefore, in this paper, we define the reactive power control using the reserve capacity has high priority because the reduction of active power is not caused by the reactive power control. Hence, we develop a new control method which can consider the control priority. The proposed method is tested in 5-node and 24-node model system.
Published Version
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