Distributed generation power inverters as shunt active power filters for losses minimization in the distribution network

This paper evaluates the benefits that can be achieved in the operation of LV distribution networks with a large penetration of distributed generation when the inverters that interface with the network are used as shunt active power filters to reduce the zero sequence current component generated by unbalanced loads. For that purpose, a typical urban distribution network has been simulated and several inverters have been connected to the network. A current control mode has been implemented for the inverters so any current component in the system can be compensated or filtered. The reduction in the power losses and the increase in the voltage quality have been quantified for the network.

[1]  T. Tran-Quoc,et al.  Technical impacts of small distributed generation units on LV networks , 2003, 2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491).

[2]  M. Alcaniz,et al.  Control of shunt unbalanced power active compensators for reactive and asymmetry elimination in four wire electrical systems using symmetrical components , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[3]  Kamal Al-Haddad,et al.  A review of active filters for power quality improvement , 1999, IEEE Trans. Ind. Electron..

[4]  Ned Mohan,et al.  Active filtering of harmonic currents in three-phase, four-wire systems with three-phase and single-phase nonlinear loads , 1992, [Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition.

[5]  E.F. El-Saadany,et al.  Flexible distributed generation: (FDG) , 2002, IEEE Power Engineering Society Summer Meeting,.

[6]  Hirofumi Akagi,et al.  Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components , 1984, IEEE Transactions on Industry Applications.