Comparison of AC and DC Bus Interconnections of Energy Storage Systems in PV Power Plants with Oversized PV Generator

Seppo Valkealahti; Markku Järvelä

doi:10.1109/PVSC40753.2019.8980909

Comparison of AC and DC Bus Interconnections of Energy Storage Systems in PV Power Plants with Oversized PV Generator

Seppo Valkealahti
, Markku Järvelä

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

3 Citations (Scopus)

20 Downloads (Pure)

Abstract

Oversizing the photovoltaic (PV) generator improves the profitability of PV power plants, but a downside is energy losses due to power clipping. If an energy storage system (ESS) is needed, connecting it to the DC side enables the utilization of the clipped energy. We compared the AC and DC bus interconnections of ESS in a typical building block of megawatt-scale PV power plants. The DC bus interconnection increases the energy yield, but also the utilization of the ESS. The operation of the ESS is affected by the production profile of the PV generator, ESS energy capacity and DC-to-AC power ratio.

Original language	English
Title of host publication	46th IEEE Photovoltaic Specialists Conference (PVSC 46), 16-21 June, 2019, Chicago, USA.
Publisher	IEEE
ISBN (Electronic)	978-1-7281-0494-2
DOIs	https://doi.org/10.1109/PVSC40753.2019.8980909
Publication status	Published - 21 Jun 2019
Publication type	A4 Article in conference proceedings
Event	IEEE Photovoltaic Specialists Conference - Duration: 16 Jun 2019 → 21 Jun 2019 Conference number: 46

Conference

Conference	IEEE Photovoltaic Specialists Conference
Abbreviated title	PVSC
Period	16/06/19 → 21/06/19

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Publication forum classification

Publication forum level 1

Access to Document

10.1109/PVSC40753.2019.8980909

comparison_of_ac_and_dc_bus_interconnections
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Accepted author manuscript, 2.9 MB

http://urn.fi/URN:NBN:fi:tuni-202102091991

Photovoltaic Power Research Plant
Lappalainen, K. (Contact)
Electrical Engineering
Facility/equipment: Research infrastructure

Cite this

@inproceedings{d739be69508c4bf7bc794b8fd43ad9e5,

title = "Comparison of AC and DC Bus Interconnections of Energy Storage Systems in PV Power Plants with Oversized PV Generator",

abstract = "Oversizing the photovoltaic (PV) generator improves the profitability of PV power plants, but a downside is energy losses due to power clipping. If an energy storage system (ESS) is needed, connecting it to the DC side enables the utilization of the clipped energy. We compared the AC and DC bus interconnections of ESS in a typical building block of megawatt-scale PV power plants. The DC bus interconnection increases the energy yield, but also the utilization of the ESS. The operation of the ESS is affected by the production profile of the PV generator, ESS energy capacity and DC-to-AC power ratio.",

author = "Seppo Valkealahti and Markku J{\"a}rvel{\"a}",

year = "2019",

month = jun,

day = "21",

doi = "10.1109/PVSC40753.2019.8980909",

language = "English",

booktitle = "46th IEEE Photovoltaic Specialists Conference (PVSC 46), 16-21 June, 2019, Chicago, USA.",

publisher = "IEEE",

address = "United States",

note = "IEEE Photovoltaic Specialists Conference, PVSC ; Conference date: 16-06-2019 Through 21-06-2019",

}

Comparison of AC and DC Bus Interconnections of Energy Storage Systems in PV Power Plants with Oversized PV Generator. / Valkealahti, Seppo; Järvelä, Markku.
46th IEEE Photovoltaic Specialists Conference (PVSC 46), 16-21 June, 2019, Chicago, USA.. IEEE, 2019.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Comparison of AC and DC Bus Interconnections of Energy Storage Systems in PV Power Plants with Oversized PV Generator

AU - Valkealahti, Seppo

AU - Järvelä, Markku

N1 - Conference code: 46

PY - 2019/6/21

Y1 - 2019/6/21

N2 - Oversizing the photovoltaic (PV) generator improves the profitability of PV power plants, but a downside is energy losses due to power clipping. If an energy storage system (ESS) is needed, connecting it to the DC side enables the utilization of the clipped energy. We compared the AC and DC bus interconnections of ESS in a typical building block of megawatt-scale PV power plants. The DC bus interconnection increases the energy yield, but also the utilization of the ESS. The operation of the ESS is affected by the production profile of the PV generator, ESS energy capacity and DC-to-AC power ratio.

AB - Oversizing the photovoltaic (PV) generator improves the profitability of PV power plants, but a downside is energy losses due to power clipping. If an energy storage system (ESS) is needed, connecting it to the DC side enables the utilization of the clipped energy. We compared the AC and DC bus interconnections of ESS in a typical building block of megawatt-scale PV power plants. The DC bus interconnection increases the energy yield, but also the utilization of the ESS. The operation of the ESS is affected by the production profile of the PV generator, ESS energy capacity and DC-to-AC power ratio.

U2 - 10.1109/PVSC40753.2019.8980909

DO - 10.1109/PVSC40753.2019.8980909

M3 - Conference contribution

BT - 46th IEEE Photovoltaic Specialists Conference (PVSC 46), 16-21 June, 2019, Chicago, USA.

PB - IEEE

T2 - IEEE Photovoltaic Specialists Conference

Y2 - 16 June 2019 through 21 June 2019

ER -

Comparison of AC and DC Bus Interconnections of Energy Storage Systems in PV Power Plants with Oversized PV Generator

Abstract

Conference

UN SDGs

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Photovoltaic Power Research Plant

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