Digital Grid: Communicative electrical grids of the future

To support a high penetration of intermittent solar and wind power generation, many regions are planning to add new high capacity transmission lines. These additional transmission lines strengthen grid synchronization, but will also increase the grid's short circuit capacity, and furthermore will be very costly. With a highly interconnected grid and variable renewable generation, a small grid failure can easily start cascading outages, resulting in large scale blackout. We introduce the “Digital Grid”, where large synchronous grids are divided into smaller segmented grids which are connected asynchronously, via multi-leg IP addressed ACs/DC/ACs converters called Digital Grid Routers. These routers communicate with each other and send power among the segmented grids through existing transmission lines, which have been re-purposed as digital grid transmission lines. The Digital Grid can accept high penetrations of renewable power, prevent cascading outages, accommodate identifiable tagged electricity flows, record those transactions and trade electricity as a commodity.

[1]  Digambar M. Tagare.  Interconnecting Distributed Resources with Electric Power Systems , 2011 .

[2]  Frede Blaabjerg,et al.  Autonomous operation of hybrid AC-DC microgrids , 2010, 2010 IEEE International Conference on Sustainable Energy Technologies (ICSET).

[3]  Shuhui Li,et al.  Control of HVDC Light System Using Conventional and Direct Current Vector Control Approaches , 2010, IEEE Transactions on Power Electronics.

[4]  Mohamed Machmoum,et al.  Application of Power Line Communication for Data Transmission Over PWM Network , 2010, IEEE Transactions on Smart Grid.

[5]  Jun Wu,et al.  Spectral measure of robustness for Internet topology , 2010, 2010 3rd International Conference on Computer Science and Information Technology.

[6]  Sekyung Han,et al.  Development of an Optimal Vehicle-to-Grid Aggregator for Frequency Regulation , 2010, IEEE Transactions on Smart Grid.

[7]  Yi Zhu,et al.  Application of power line communication in smart power Consumption , 2010, ISPLC2010.

[8]  Deepak Divan,et al.  Power flow control in networks using controllable network transformers , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[9]  Ganesh Kumar Venayagamoorthy,et al.  Unit commitment with vehicle-to-Grid using particle swarm optimization , 2009, 2009 IEEE Bucharest PowerTech.

[10]  Ganesh Kumar Venayagamoorthy,et al.  Optimization of vehicle-to-grid scheduling in constrained parking lots , 2009, 2009 IEEE Power & Energy Society General Meeting.

[11]  Xunwei Yu,et al.  Power electronics interfaces for hybrid DC and AC-linked microgrids , 2009, 2009 IEEE 6th International Power Electronics and Motion Control Conference.

[12]  Yasuhiro Hayashi,et al.  Active coordinated operation of a distribution network system for many connections of distributed generators , 2009 .

[13]  G. Andersson,et al.  Demand Management of Grid Connected Plug-In Hybrid Electric Vehicles (PHEV) , 2008, 2008 IEEE Energy 2030 Conference.

[14]  Xiaolong Yu,et al.  Impacts assessment of PHEV charge profiles on generation expansion using national energy modeling system , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[15]  Willett Kempton,et al.  Using fleets of electric-drive vehicles for grid support , 2007 .

[16]  Masahide Hojo,et al.  Active coordinated operation of distribution network system for many connections of distributed generators , 2007 .

[17]  S.K. Mazumder,et al.  Wireless PWM control of a parallel DC-DC buck converter , 2005, IEEE Transactions on Power Electronics.

[18]  Willett Kempton,et al.  Vehicle-to-grid power implementation: From stabilizing the grid to supporting large-scale renewable energy , 2005 .

[19]  Willett Kempton,et al.  Vehicle-to-grid power fundamentals: Calculating capacity and net revenue , 2005 .

[20]  Farhad Rachidi,et al.  Influence of power switching on power line communications in medium voltage networks , 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

[21]  Hiroumi Saitoh,et al.  A New Concept of Electric Power Network for the Effective Transportation of Small Power of Dispersed Generation Plants , 1995 .

[22]  G. Gross,et al.  Design of a Conceptual Framework for the V2G Implementation , 2008, 2008 IEEE Energy 2030 Conference.

[23]  Dennis Woodford,et al.  Softening the Blow of Disturbances , 2008, IEEE Power and Energy Magazine.

[24]  Hiroshi Suzuki,et al.  Advanced Metering Infrastructure based on Smart Meters , 2007 .

[25]  Akihiko Yokoyama,et al.  Autonomous Decentralized Control of Supply and Demand by Inverter Based Distributed Generations in Isolated Microgrid , 2007 .

[26]  Yoshihiko Matsumoto,et al.  A Vision of the Electric Power System Architecture Aiming for Our New Generation , 2003 .

[27]  Junichi Toyoda,et al.  A Study on Autonomous Decentralized Control Mechanism of Power Flow in Open Electric Energy Network , 1997 .