Impacts of distributed generation on voltage sag assessment in distribution systems

This paper presents impacts of distributed generation (DG) on voltage sag assessment in distribution systems. Voltage sag assessment is analyzed by using the method of fault positions in order to determine area of vulnerability (AOV), voltage sag frequency and voltage sag index. Simulation results of case studies on The Roy Billinton Test System (RBTS bus 2) are summarized. Results show that DG should be installed on the same feeder and closed to SE as much as possible. DG installed at an upstream location of SE shows better performance than a downstream location.

[1]  Chang-Hyun Park,et al.  Stochastic Estimation of Voltage Sags in a Large Meshed Network , 2007, IEEE Transactions on Power Delivery.

[2]  Jacinto Martin-Arnedo,et al.  Impact of distributed generation on distribution protection and power quality , 2009, 2009 IEEE Power & Energy Society General Meeting.

[3]  T. Tayjasanant,et al.  An analytical approach for stochastic estimation of voltage sags in power systems , 2008, 2008 5th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology.

[4]  Roy Billinton,et al.  A reliability test system for educational purposes-basic distribution system data and results , 1991 .

[5]  Akihiko Yokoyama,et al.  Impacts of Voltage Sags and Protection Coordination on Sensitive Equipment in Distribution Systems , 2010 .

[6]  J.A. Martinez,et al.  Voltage sag studies in distribution Networks-part III: Voltage sag index calculation , 2006, IEEE Transactions on Power Delivery.

[7]  Cheng-Ting Hsu,et al.  Dispersed Generation Systems Impact on the Voltage Sags in Distribution Systems , 2006, 2006 International Conference on Power System Technology.