A UPFC with reduced DC bus capacitance for LV distribution networks with high PV penetrations
A low voltage (LV) distribution level unified power flow controller (UPFC) is shown capable of regulating the positive sequence voltage with a network while simultaneously correcting phase unbalance voltages that can be produced by high levels of distributed photovoltaic (PV) generation. Instantaneo...
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| Format: | Conference Paper |
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Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia
2012
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| Online Access: | http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6360285 http://hdl.handle.net/20.500.11937/16631 |
| Summary: | A low voltage (LV) distribution level unified power flow controller (UPFC) is shown capable of regulating the positive sequence voltage with a network while simultaneously correcting phase unbalance voltages that can be produced by high levels of distributed photovoltaic (PV) generation. Instantaneous reactive power theory shows that DC-bus capacitor power will fluctuate at twice mains frequency during any unbalanced operation. Instantaneous power balance can be maintained by allowing the input converter to draw a small negative sequence current. This allows a hundred-fold reduction in the value of the DC bus capacitance allowing long life ceramic or polypropylene capacitors to replace electrolytic capacitors in this application. |
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