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Impact of High PV Penetration in a Real Large Feeder Network Using Edge Based Advanced Control and Novel Soft-Switching DC-DC Topologies.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Impact of High PV Penetration in a Real Large Feeder Network Using Edge Based Advanced Control and Novel Soft-Switching DC-DC Topologies./
Author:	Korada, Nikhil.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2022,
Description:	170 p.
Notes:	Source: Dissertations Abstracts International, Volume: 83-11, Section: B.
Contained By:	Dissertations Abstracts International83-11B.
Subject:	Electrical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29166408
ISBN:	9798802716908

Impact of High PV Penetration in a Real Large Feeder Network Using Edge Based Advanced Control and Novel Soft-Switching DC-DC Topologies.
Korada, Nikhil.

Impact of High PV Penetration in a Real Large Feeder Network Using Edge Based Advanced Control and Novel Soft-Switching DC-DC Topologies. - Ann Arbor : ProQuest Dissertations & Theses, 2022 - 170 p.

Source: Dissertations Abstracts International, Volume: 83-11, Section: B.

Thesis (Ph.D.)--Arizona State University, 2022.

This item must not be sold to any third party vendors.

Large number of renewable energy based distributed energy resources(DERs) are integrated into the conventional power grid using power electronic interfaces. This causes increased need for efficient power conversion, advanced control, and DER situational awareness. In case of photovoltaic(PV) grid integration, power is processed in two stages, namely DC-DC and DC-AC. In this work, two novel soft-switching schemes for quadratic boost DC-DC converters are proposed for PV microinverter application. Both the schemes allow the converter to operate at higher switching frequency, reducing the converter size while still maintaining high power conversion efficiency. Further, to analyze the impact of high penetration DERs on the power system a real-time simulation platform has been developed in this work. A real, large distribution feeder with more than 8000 buses is considered for investigation. The practical challenges in the implementation of a real-time simulation (such as number of buses, simulation time step, and computational burden) and the corresponding solutions are discussed. The feeder under study has a large number of DERs leading to more than 200% instantaneous PV penetration. Opal-RT ePHASORSIM model of the distribution feeder and different types of DER models are discussed in detailed in this work.A novel DER-Edge-Cloud based three-level architecture is proposed for achieving solar situational awareness for the system operators and for real-time control of DERs. This is accomplished using a network of customized edge-intelligent-devices(EIDs) and end-to-end solar energy optimization platform(eSEOP). The proposed architecture attains superior data resolution, data transfer rate and low latency for the end-to-end communication. An advanced PV string inverter with control and communication capabilities exceeding those of state-of-the-art, commercial inverters has been developed to demonstrate the proposed real-time control. A power-hardware-in-loop(PHIL) and EID-in-loop(EIL) testbeds are developed to verify the impact of large number of controllable DERs on the distribution system under different operational modes such as volt-VAr, constant reactive power and constant power factor. Edge level data analytics and intelligent controls such as autonomous reactive power allocation strategy are implemented using EIL testbed for real-time monitoring and control. Finally, virtual oscillator control(VOC) for grid forming inverters and its operation under different X/R conditions are explored.

ISBN: 9798802716908Subjects--Topical Terms:

649834
Electrical engineering.
Subjects--Index Terms:

DC-DC high gain converter

Impact of High PV Penetration in a Real Large Feeder Network Using Edge Based Advanced Control and Novel Soft-Switching DC-DC Topologies.
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245 1 0 $a Impact of High PV Penetration in a Real Large Feeder Network Using Edge Based Advanced Control and Novel Soft-Switching DC-DC Topologies.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2022
300 $a 170 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-11, Section: B.
500 $a Advisor: Ayyanar, Raja.
502 $a Thesis (Ph.D.)--Arizona State University, 2022.
506 $a This item must not be sold to any third party vendors.
520 $a Large number of renewable energy based distributed energy resources(DERs) are integrated into the conventional power grid using power electronic interfaces. This causes increased need for efficient power conversion, advanced control, and DER situational awareness. In case of photovoltaic(PV) grid integration, power is processed in two stages, namely DC-DC and DC-AC. In this work, two novel soft-switching schemes for quadratic boost DC-DC converters are proposed for PV microinverter application. Both the schemes allow the converter to operate at higher switching frequency, reducing the converter size while still maintaining high power conversion efficiency. Further, to analyze the impact of high penetration DERs on the power system a real-time simulation platform has been developed in this work. A real, large distribution feeder with more than 8000 buses is considered for investigation. The practical challenges in the implementation of a real-time simulation (such as number of buses, simulation time step, and computational burden) and the corresponding solutions are discussed. The feeder under study has a large number of DERs leading to more than 200% instantaneous PV penetration. Opal-RT ePHASORSIM model of the distribution feeder and different types of DER models are discussed in detailed in this work.A novel DER-Edge-Cloud based three-level architecture is proposed for achieving solar situational awareness for the system operators and for real-time control of DERs. This is accomplished using a network of customized edge-intelligent-devices(EIDs) and end-to-end solar energy optimization platform(eSEOP). The proposed architecture attains superior data resolution, data transfer rate and low latency for the end-to-end communication. An advanced PV string inverter with control and communication capabilities exceeding those of state-of-the-art, commercial inverters has been developed to demonstrate the proposed real-time control. A power-hardware-in-loop(PHIL) and EID-in-loop(EIL) testbeds are developed to verify the impact of large number of controllable DERs on the distribution system under different operational modes such as volt-VAr, constant reactive power and constant power factor. Edge level data analytics and intelligent controls such as autonomous reactive power allocation strategy are implemented using EIL testbed for real-time monitoring and control. Finally, virtual oscillator control(VOC) for grid forming inverters and its operation under different X/R conditions are explored.
590 $a School code: 0010.
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650 4 $a Energy. $3 876794
650 4 $a Alternative energy. $3 3436775
650 4 $a Optics. $3 517925
653 $a DC-DC high gain converter
653 $a Distributed energy resource
653 $a Distribution network
653 $a Photovoltaic inverter
653 $a Power-hardware- in-loop
653 $a Soft-switching
653 $a Solar inverter
690 $a 0544
690 $a 0752
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710 2 $a Arizona State University. $b Electrical Engineering. $3 1671741
773 0 $t Dissertations Abstracts International $g 83-11B.
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792 $a 2022
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29166408