1. Dual$P$-$Q$Theory Based Energy-Optimized Dynamic Voltage Restorer for Power Quality Improvement in a Distribution System.
- Author
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Pradhan, Manik and Mishra, Mahesh K.
- Subjects
- *
ELECTRIC potential , *ELECTRIC power filters , *PHASOR measurement , *ELECTRIC power , *VOLTAGE control , *ELECTRICITY - Abstract
This paper deals with the protection of critical loads from voltage-related power quality issues using a dynamic voltage restorer (DVR). A generalized control algorithm based on instantaneous space phasor and dual $P$ - $Q$ theory has been proposed to generate the instantaneous reference voltages to compensate the load voltages with direct power flow control. The proposed algorithm adapts energy-optimized series voltage compensation, which results in a reduction of energy storage requirement. The proposed DVR control scheme can support the load from voltage-related power quality issues irrespective of the load current profile. Each leg of the three-phase three-leg split capacitor inverter is used to inject series compensation voltage in respective phases of the system. Model-based computer simulation studies and real-time experimental results validate the effectiveness of the proposed control algorithm. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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