Overcurrent directional protection with PV system integration

Aloisio Cesar; Khaled M. Abo-Al-Ez; Mohamed Tariq Kahn

Overcurrent directional protection with PV system integration

Aloisio Cesar
, Khaled M. Abo-Al-Ez
, Mohamed Tariq Kahn

Cape Peninsula University of Technology

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

6 Citations (Scopus)

Abstract

In modern electric networks with Distributed Generation (DG) units the power flow is bidirectional, which makes the DG units contribute to power systems faults. This scenario causes variable short circuit current. The short-circuit current is variable due to the different penetration level of DG sources. When the number and capacity of the DG units increases, the coordination of the protective relays becomes more complex and challenging. It is required to accurately coordinate overcurrent directional relays to be able to discriminate and operate sequentially for faults in the protected zone, to avoid unnecessary trips. When the DG units are Photovoltaic (PV) systems, the problem is more complex since both the generation and the loads are variable. This paper presents case studies of overcurrent directional protection with different PV system penetration levels, using IEEE-9 bus test system. Relay settings are selected to ensure that the directional overcurrent relay trips selectively. DigSilent Power Factory software is used for modelling and simulations of the suggested operational scenarios.

Original language	English
Title of host publication	Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2-7
Number of pages	6
ISBN (Electronic)	9780639964737
Publication status	Published - Mar 2019
Externally published	Yes
Event	27th International Conference on the Domestic Use of Energy, DUE 2019 - Wellington, South Africa Duration: 25 Mar 2019 → 27 Mar 2019

Publication series

Name	Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019

Conference

Conference	27th International Conference on the Domestic Use of Energy, DUE 2019
Country/Territory	South Africa
City	Wellington
Period	25/03/19 → 27/03/19

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Directional overcurrent relay
Distributed generator
Grid Integration
Power Factory modelling
PV system

ASJC Scopus subject areas

Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Social Sciences (miscellaneous)

Cite this

Cesar, A., Abo-Al-Ez, K. M., & Kahn, M. T. (2019). Overcurrent directional protection with PV system integration. In Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019 (pp. 2-7). Article 8734386 (Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019). Institute of Electrical and Electronics Engineers Inc..

Cesar, Aloisio ; Abo-Al-Ez, Khaled M. ; Kahn, Mohamed Tariq. / Overcurrent directional protection with PV system integration. Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 2-7 (Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019).

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title = "Overcurrent directional protection with PV system integration",

abstract = "In modern electric networks with Distributed Generation (DG) units the power flow is bidirectional, which makes the DG units contribute to power systems faults. This scenario causes variable short circuit current. The short-circuit current is variable due to the different penetration level of DG sources. When the number and capacity of the DG units increases, the coordination of the protective relays becomes more complex and challenging. It is required to accurately coordinate overcurrent directional relays to be able to discriminate and operate sequentially for faults in the protected zone, to avoid unnecessary trips. When the DG units are Photovoltaic (PV) systems, the problem is more complex since both the generation and the loads are variable. This paper presents case studies of overcurrent directional protection with different PV system penetration levels, using IEEE-9 bus test system. Relay settings are selected to ensure that the directional overcurrent relay trips selectively. DigSilent Power Factory software is used for modelling and simulations of the suggested operational scenarios.",

keywords = "Directional overcurrent relay, Distributed generator, Grid Integration, Power Factory modelling, PV system",

author = "Aloisio Cesar and Abo-Al-Ez, \{Khaled M.\} and Kahn, \{Mohamed Tariq\}",

note = "Publisher Copyright: {\textcopyright} 2019 cape peninsula university of technology.; 27th International Conference on the Domestic Use of Energy, DUE 2019 ; Conference date: 25-03-2019 Through 27-03-2019",

year = "2019",

month = mar,

language = "English",

series = "Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "2--7",

booktitle = "Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019",

address = "United States",

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Cesar, A, Abo-Al-Ez, KM & Kahn, MT 2019, Overcurrent directional protection with PV system integration. in Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019., 8734386, Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019, Institute of Electrical and Electronics Engineers Inc., pp. 2-7, 27th International Conference on the Domestic Use of Energy, DUE 2019, Wellington, South Africa, 25/03/19.

Overcurrent directional protection with PV system integration. / Cesar, Aloisio; Abo-Al-Ez, Khaled M.; Kahn, Mohamed Tariq.
Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 2-7 8734386 (Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019).

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

TY - GEN

T1 - Overcurrent directional protection with PV system integration

AU - Cesar, Aloisio

AU - Abo-Al-Ez, Khaled M.

AU - Kahn, Mohamed Tariq

PY - 2019/3

Y1 - 2019/3

N2 - In modern electric networks with Distributed Generation (DG) units the power flow is bidirectional, which makes the DG units contribute to power systems faults. This scenario causes variable short circuit current. The short-circuit current is variable due to the different penetration level of DG sources. When the number and capacity of the DG units increases, the coordination of the protective relays becomes more complex and challenging. It is required to accurately coordinate overcurrent directional relays to be able to discriminate and operate sequentially for faults in the protected zone, to avoid unnecessary trips. When the DG units are Photovoltaic (PV) systems, the problem is more complex since both the generation and the loads are variable. This paper presents case studies of overcurrent directional protection with different PV system penetration levels, using IEEE-9 bus test system. Relay settings are selected to ensure that the directional overcurrent relay trips selectively. DigSilent Power Factory software is used for modelling and simulations of the suggested operational scenarios.

AB - In modern electric networks with Distributed Generation (DG) units the power flow is bidirectional, which makes the DG units contribute to power systems faults. This scenario causes variable short circuit current. The short-circuit current is variable due to the different penetration level of DG sources. When the number and capacity of the DG units increases, the coordination of the protective relays becomes more complex and challenging. It is required to accurately coordinate overcurrent directional relays to be able to discriminate and operate sequentially for faults in the protected zone, to avoid unnecessary trips. When the DG units are Photovoltaic (PV) systems, the problem is more complex since both the generation and the loads are variable. This paper presents case studies of overcurrent directional protection with different PV system penetration levels, using IEEE-9 bus test system. Relay settings are selected to ensure that the directional overcurrent relay trips selectively. DigSilent Power Factory software is used for modelling and simulations of the suggested operational scenarios.

KW - Directional overcurrent relay

KW - Distributed generator

KW - Grid Integration

KW - Power Factory modelling

KW - PV system

UR - https://www.scopus.com/pages/publications/85068423844

M3 - Conference contribution

AN - SCOPUS:85068423844

T3 - Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019

SP - 2

EP - 7

BT - Proceedings of the 27th International Conference on the Domestic Use of Energy, DUE 2019

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 27th International Conference on the Domestic Use of Energy, DUE 2019

Y2 - 25 March 2019 through 27 March 2019

ER -

Overcurrent directional protection with PV system integration

Abstract

Publication series

Conference

UN SDGs

Keywords

ASJC Scopus subject areas

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Cite this