Power quality and custom power: Seeking for a common solution in LV distribution network

Power Quality (PQ) and Custom Power (CP) are two different terms in electric power system. PQ is the definition of a unique standard which the distribution system operators (DSO) should respect precisely. The DSO can manage its network to address the PQ issues but the result could satisfy only some end users requirements while others could need to improve their voltage profile. Therefore, the custom needs can be not completely satisfied by this standard and with the term CP we define the end user needs. This paper presents PQ and CP definitions and tries to find a possible common solution for DSO and final users in a contest where power electronics play an important role. Indeed in this new concept of distribution electricity network, as application in smart grid, there is a huge diffusion of renewable energy sources and storage systems. In this contest a solution able to provide economic benefits to DSO and end users needs to be found.