Potential Solutions for Minimizing Voltage Sags Caused by DG Anti-Islanding Protection

This paper proposes solutions to the problem of voltage sags caused by distributed generators anti-islanding protection. This is a recently identified power-quality (PQ) concern resulting from the increasing penetration of distributed generators into distribution networks. This problem has been previously investigated by the authors and it was revealed that it can seriously affect PQ indices as well as distributed generators reconnection procedures. However, no solutions have been formerly proposed or investigated. In this context, this paper investigates several potential solutions to be adopted by the utility and/or by the DG owners and presents a thorough evaluation of their main advantages and disadvantages. Besides this investigation, simple step-by-step procedures for assessing the effectiveness of each solution are described. The presented studies and procedures will guide the utility engineers in decision-making process associated with the choice of reasonable mitigation techniques to this problem.

[1]  Sang-Yun Yun,et al.  Quantitative Evaluation of the Impact of Repetitive Voltage Sags on Low-Voltage Loads , 2007, IEEE Transactions on Power Delivery.

[2]  Walmir Freitas,et al.  Method for determining the maximum allowable penetration level of distributed generation without steady-state voltage violations , 2010 .

[3]  C. L. Masters.  Voltage rise: the big issue when connecting embedded generation to long 11 kV overhead lines , 2002 .

[4]  Balasubramaniam Natarajan,et al.  Voltage/VAR Control in Distribution Networks via Reactive Power Injection Through Distributed Generators , 2012, IEEE Transactions on Smart Grid.

[5]  D. Karlsson,et al.  Coordinated voltage and reactive power control in the presence of distributed generation , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[6]  J. C. M. Vieira,et al.  Investigation on Voltage Sags Caused by DG Anti-Islanding Protection , 2013, IEEE Transactions on Power Delivery.

[7]  P. Kundur,et al.  Power system stability and control , 1994 .

[8]  Sean Elphick,et al.  Voltage sag susceptibility of 230 V equipment , 2013 .

[9]  Nick Jenkins,et al.  Embedded Generation (Power & Energy Ser. 31) , 2000 .

[10]  Gareth Harrison,et al.  Network Distributed Generation Capacity Analysis Using OPF With Voltage Step Constraints , 2010 .

[11]  Shahram Jadid,et al.  A new approach for real time voltage control using demand response in an automated distribution system , 2014 .

[12]  L.A.F. Ferreira,et al.  Distributed Reactive Power Generation Control for Voltage Rise Mitigation in Distribution Networks , 2008, IEEE Transactions on Power Systems.

[13]  Johanna L. Mathieu,et al.  State Estimation and Control of Electric Loads to Manage Real-Time Energy Imbalance , 2013 .

[14]  Hussain Shareef,et al.  A review on voltage control methods for active distribution networks , 2012 .

[15]  David Reid,et al.  Active network management of voltage leading to increased generation and improved network utilisation , 2008 .

[16]  G.P. Harrison,et al.  Centralized and Distributed Voltage Control: Impact on Distributed Generation Penetration , 2007, IEEE Transactions on Power Systems.