Smart Decentralized Control of DG for Voltage and Thermal Constraint Management

Active Network Management schemes are being developed to accommodate larger volumes of renewable generation within distribution networks. Approaches typically manage only single technical constraints or are highly complex with extensive sensing and communications needs that bring cost, deployment, and operational risks. This work offers an alternative, decentralized approach for real-time management of local voltage and thermal constraints that avoids extensive sensing and communications. It controls generator active and reactive power output to overcome voltage and thermal issues near the point of connection. Results from time-series analyses reveal its effectiveness in managing both constraints and allowing greater production. It represents a potentially effective and fast-to-deploy alternative to more complex, integrated solutions.

[1]  Thomas Boehme,et al.  Matching renewable electricity generation with demand in Scotland , 2006 .

[2]  W. Marsden I and J , 2012 .

[3]  Gareth A. Taylor,et al.  Flexible voltage control in distribution networks with distributed generation - modelling analysis and field trial comparison , 2009 .

[4]  Janusz Bialek,et al.  Generation curtailment to manage voltage constraints in distribution networks , 2007 .

[5]  Goran Strbac,et al.  Maximising penetration of wind generation in existing distribution networks , 2002 .

[6]  Tao Xu,et al.  Case based reasoning for distributed voltage control , 2009 .

[7]  Sara White Active local distribution network management for embedded generation , 2005 .

[8]  Alexander Viehweider,et al.  Smart robust voltage control for distribution networks using interval arithmetic and state machine concepts , 2010, 2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe).

[9]  Thomas Ackermann,et al.  Wind Power in Power Systems , 2005 .

[10]  Nouredine Hadjsaid,et al.  Intelligent voltage control in distribution network with distributed generation , 2007 .

[11]  Gareth Harrison,et al.  Assessment of distribution network limits for non-firm connection of renewable generation , 2010 .

[12]  Gareth Harrison,et al.  Decentralised voltage and thermal management to enable more distributed generation connection , 2010 .

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

[14]  S. Arnalte,et al.  Automatic Generation Control of a Wind Farm with Variable Speed Wind Turbines , 2002, IEEE Power Engineering Review.

[15]  Graham Ault,et al.  Active power-flow management utilising operating margins for the increased connection of distributed generation , 2007 .

[16]  J.R. McDonald,et al.  Actively Managing Wind Farm Power Output , 2008, IEEE Transactions on Power Systems.

[17]  Luis F. Ochoa,et al.  Integrating distributed generation using decentralised voltage regulation , 2010, IEEE PES General Meeting.

[18]  A. R. Wallace,et al.  Maximising energy capture from distributed generators in weak networks , 2004 .