Interphase Power Flow Control via Single-Phase Elements in Distribution Systems

Piyapath Siratarnsophon, Vinicius C. Cunha, Nicholas G. Barry and Surya Santoso
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Piyapath Siratarnsophon: Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX 78712, USA
Vinicius C. Cunha: Department of Systems and Energy, University of Campinas, Campinas 13083-970, Brazil
Nicholas G. Barry: Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX 78712, USA
Surya Santoso: Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX 78712, USA

Clean Technol., 2021, vol. 3, issue 1, 1-22

Abstract: The capability of routing power from one phase to another, interphase power flow (IPPF) control, has the potential to improve power systems efficiency, stability, and operation. To date, existing works on IPPF control focus on unbalanced compensation using three-phase devices. An IPPF model is proposed for capturing the general power flow caused by single-phase elements. The model reveals that the presence of a power quantity in line-to-line single-phase elements causes an IPPF of the opposite quantity; line-to-line reactive power consumption causes real power flow from leading to lagging phase while real power consumption causes reactive power flow from lagging to leading phase. Based on the model, the IPPF control is proposed for line-to-line single-phase power electronic interfaces and static var compensators (SVCs). In addition, the control is also applicable for the line-to-neutral single-phase elements connected at the wye side of delta-wye transformers. Two simulations on a multimicrogrid system and a utility feeder are provided for verification and demonstration. The application of IPPF control allows single-phase elements to route active power between phases, improving system operation and flexibility. A simple IPPF control for active power balancing at the feeder head shows reductions in both voltage unbalances and system losses.

Keywords: distribution system; microgrids; power quality; power system management; power system reliability; smart grids (search for similar items in EconPapers)
JEL-codes: Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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