Distribution feeder voltage regulation control

2009 ◽  
Author(s):  
W. H. Kersting
Keyword(s):  
Voltage Regulation ◽  
Distribution Feeder

Effect of Distributed Generation on Voltage Levels in a Radial Distribution Network Without Communication

2009 ◽  
Author(s):  
Allie E. Auld ◽  
Jack Brouwer ◽  
Scott Samuelsen ◽  
Keyue M. Smedley
Keyword(s):  
Distributed Generation ◽  
Radial Distribution ◽  
Power Factor ◽  
Distribution System ◽  
Reactive Power ◽  
Voltage Regulation ◽  
Load Drop ◽  
Unity Power Factor ◽  
Distribution Feeder ◽  
Circuit Power

The challenges associated with incorporating a large amount of distributed generation (DG), including fuel cells, into a radial distribution feeder are examined using a Matlab/Simulink™ model. Two generic distribution feeder models are used to investigate possible scenarios where voltage problems may occur. Modern inverter topologies make ancillary features, such as on-demand reactive power generation/consumption economical to include, which expands the design space across which DG can function in the distribution system. The simulation platform enables testing of the following local control goals: DG connected with unity power factor, DG and load connected with unity power factor, DG connected with local voltage regulation (LVR), and DG connected with real power curtailment. Both the LVR and curtailment strategies can regulate the voltage of the simplest circuit case, but the circuit utilizing a substation with load drop compensation has no universal solution. Even DG with a penetration level around 10% of rated circuit power can cause overvoltage problems with load drop compensation. This implies that some degree of communication will be needed to reliably install a large amount of DG on a distribution circuit.

scholarly journals Effects of Distributed Generation on Voltage Levels in a Radial Distribution Network Without Communication

2010 ◽  
Vol 7 (6) ◽  
Author(s):  
Allie E. Auld ◽  
Jack Brouwer ◽  
Keyue M. Smedley ◽  
Scott Samuelsen
Keyword(s):  
Distributed Generation ◽  
Radial Distribution ◽  
Power Factor ◽  
Voltage Regulation ◽  
Load Drop ◽  
Unity Power Factor ◽  
Real Power ◽  
Light Load ◽  
Universal Solution ◽  
Distribution Feeder

The challenges associated with incorporating a large amount of distributed generation (DG), including fuel cells, into a radial distribution feeder are examined using a dynamic MATLAB/SIMULINK™ model. Two generic distribution feeder models are used to investigate possible scenarios where voltage problems may occur. Modern inverter topologies make ancillary services, such as on-demand reactive power generation/consumption economical to include, which expands the design space across which DG can function in the distribution system. The simulation platform enables testing of the following local control goals: DG connected with unity power factor, DG and load connected with unity power factor, DG connected with local voltage regulation (LVR), and DG connected with real power curtailment. Both the LVR and curtailment strategies can regulate the voltage of the simple circuit case, but the circuit utilizing a substation with load drop compensation has no universal solution. Even DG with a penetration level around 10% of rated circuit power can cause overvoltage problems with load drop compensation. The real power curtailment control strategy creates the best overall circuit efficiency, while all other control strategies result in low light load efficiency at high DG penetrations. The lack of a universal solution implies that some degree of communication will be needed to reliably install a large amount of DG on a distribution circuit.

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