Microinverter curtailment strategy for increasing photovoltaic penetration in low-voltage networks

O. Gagrica, H.P. Nguyen, W.L. Kling, T. Uhl

Research output: Contribution to journalArticleAcademicpeer-review

33 Citations (Scopus)
272 Downloads (Pure)

Abstract

Transition toward smart distribution networks with high penetration of photovoltaics (PVs) will involve incidental generation curtailment as an alternative to grid reinforcements. Microinverters are taking over popularity of string inverters in residential and some commercial areas mainly due to increased energy harvest. This paper demonstrates how microinverters with a modified overvoltage protection scheme could provide a reliable curtailment solution and accommodate additional PV capacity. Two wide-area curtailment schemes were proposed for a typical Dutch residential feeder with densely clustered PV. First, a single worst-case scenario was used to demonstrate the capabilities of the proposed curtailment schemes: the distribution network operators can optimize between various priorities such as total feeder output, economic equality between connected parties, voltage levels, voltage unbalance, and curtailment execution time. Second, a yearly comparison was made against conventional overvoltage protection and the results show 62%–100% reduction in overvoltage losses.
Original languageEnglish
Pages (from-to)369-379
Number of pages11
JournalIEEE Transactions on Sustainable Energy
Volume6
Issue number2
DOIs
Publication statusPublished - 2015

Fingerprint

Overvoltage protection
Electric power distribution
Electric potential
Reinforcement
Economics

Cite this

@article{4f80a1f9594145f7a311e37cae30bc8d,
title = "Microinverter curtailment strategy for increasing photovoltaic penetration in low-voltage networks",
abstract = "Transition toward smart distribution networks with high penetration of photovoltaics (PVs) will involve incidental generation curtailment as an alternative to grid reinforcements. Microinverters are taking over popularity of string inverters in residential and some commercial areas mainly due to increased energy harvest. This paper demonstrates how microinverters with a modified overvoltage protection scheme could provide a reliable curtailment solution and accommodate additional PV capacity. Two wide-area curtailment schemes were proposed for a typical Dutch residential feeder with densely clustered PV. First, a single worst-case scenario was used to demonstrate the capabilities of the proposed curtailment schemes: the distribution network operators can optimize between various priorities such as total feeder output, economic equality between connected parties, voltage levels, voltage unbalance, and curtailment execution time. Second, a yearly comparison was made against conventional overvoltage protection and the results show 62{\%}–100{\%} reduction in overvoltage losses.",
author = "O. Gagrica and H.P. Nguyen and W.L. Kling and T. Uhl",
year = "2015",
doi = "10.1109/TSTE.2014.2379918",
language = "English",
volume = "6",
pages = "369--379",
journal = "IEEE Transactions on Sustainable Energy",
issn = "1949-3029",
publisher = "Institute of Electrical and Electronics Engineers",
number = "2",

}

Microinverter curtailment strategy for increasing photovoltaic penetration in low-voltage networks. / Gagrica, O.; Nguyen, H.P.; Kling, W.L.; Uhl, T.

In: IEEE Transactions on Sustainable Energy, Vol. 6, No. 2, 2015, p. 369-379.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Microinverter curtailment strategy for increasing photovoltaic penetration in low-voltage networks

AU - Gagrica, O.

AU - Nguyen, H.P.

AU - Kling, W.L.

AU - Uhl, T.

PY - 2015

Y1 - 2015

N2 - Transition toward smart distribution networks with high penetration of photovoltaics (PVs) will involve incidental generation curtailment as an alternative to grid reinforcements. Microinverters are taking over popularity of string inverters in residential and some commercial areas mainly due to increased energy harvest. This paper demonstrates how microinverters with a modified overvoltage protection scheme could provide a reliable curtailment solution and accommodate additional PV capacity. Two wide-area curtailment schemes were proposed for a typical Dutch residential feeder with densely clustered PV. First, a single worst-case scenario was used to demonstrate the capabilities of the proposed curtailment schemes: the distribution network operators can optimize between various priorities such as total feeder output, economic equality between connected parties, voltage levels, voltage unbalance, and curtailment execution time. Second, a yearly comparison was made against conventional overvoltage protection and the results show 62%–100% reduction in overvoltage losses.

AB - Transition toward smart distribution networks with high penetration of photovoltaics (PVs) will involve incidental generation curtailment as an alternative to grid reinforcements. Microinverters are taking over popularity of string inverters in residential and some commercial areas mainly due to increased energy harvest. This paper demonstrates how microinverters with a modified overvoltage protection scheme could provide a reliable curtailment solution and accommodate additional PV capacity. Two wide-area curtailment schemes were proposed for a typical Dutch residential feeder with densely clustered PV. First, a single worst-case scenario was used to demonstrate the capabilities of the proposed curtailment schemes: the distribution network operators can optimize between various priorities such as total feeder output, economic equality between connected parties, voltage levels, voltage unbalance, and curtailment execution time. Second, a yearly comparison was made against conventional overvoltage protection and the results show 62%–100% reduction in overvoltage losses.

U2 - 10.1109/TSTE.2014.2379918

DO - 10.1109/TSTE.2014.2379918

M3 - Article

VL - 6

SP - 369

EP - 379

JO - IEEE Transactions on Sustainable Energy

JF - IEEE Transactions on Sustainable Energy

SN - 1949-3029

IS - 2

ER -