Voltage Regulation in Weak Distribution Grids Using Transformerless Series Compensators

Senthooran Balasubramaniam; Grazia Todeschini; Petar Igic

doi:10.1109/PESGM40551.2019.8974055

Voltage Regulation in Weak Distribution Grids Using Transformerless Series Compensators

Senthooran Balasubramaniam, Grazia Todeschini, Petar Igic

Swansea University

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

2 Citations (Scopus)

Abstract

With increasing penetration of distributed generators (DGs), existing distribution grids are becoming weaker. As a result, voltage regulation in distribution grids impose a significant challenge and can be improved by introducing additional control apparatuses. In this paper, a transformerless static synchronous series compensator (T-SSSC) is adopted to maximise the power transfer between DGs and a weak grid by improving grid voltage stability. A new control strategy is introduced to reduce the number of switching events during the operation of a T-SSSC, thus limiting the switching losses. Furthermore, a new droop based control scheme is proposed to minimise the voltage unbalance between phases. A medium voltage distribution grid with embedded T-SSSCs modelled in Simulink has been used to verify the effectiveness of the proposed control schemes. For completeness, the performance a T-SSSC is investigated following a sudden change in grid short circuit level.

Original language	English
Title of host publication	2019 IEEE Power & Energy Society General Meeting (PESGM)
Publisher	IEEE
Number of pages	5
ISBN (Electronic)	978-1-7281-1981-6
DOIs	https://doi.org/10.1109/PESGM40551.2019.8974055
Publication status	Published - 30 Jan 2020
Externally published	Yes
Event	2019 IEEE Power & Energy Society General Meeting - Atlanta, United States Duration: 4 Aug 2019 → 8 Aug 2019 https://www.pes-gm.org/2019/

Publication series

Name	IEEE Power and Energy Society General Meeting
Volume	2019-August
ISSN (Print)	1944-9925
ISSN (Electronic)	1944-9933

Conference

Conference	2019 IEEE Power & Energy Society General Meeting
Abbreviated title	PESGM
Country/Territory	United States
City	Atlanta
Period	4/08/19 → 8/08/19
Internet address	https://www.pes-gm.org/2019/

Keywords

distributed generation
short circuit ratio
static synchronous compensator
voltage unbalance

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Nuclear Energy and Engineering
Renewable Energy, Sustainability and the Environment

UN SDGs

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

Access to Document

10.1109/PESGM40551.2019.8974055

Cite this

Voltage Regulation in Weak Distribution Grids Using Transformerless Series Compensators. / Balasubramaniam, Senthooran; Todeschini, Grazia; Igic, Petar.
2019 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2020. 8974055 (IEEE Power and Energy Society General Meeting; Vol. 2019-August).

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

Balasubramaniam, S, Todeschini, G & Igic, P 2020, Voltage Regulation in Weak Distribution Grids Using Transformerless Series Compensators. in 2019 IEEE Power & Energy Society General Meeting (PESGM)., 8974055, IEEE Power and Energy Society General Meeting, vol. 2019-August, IEEE, 2019 IEEE Power & Energy Society General Meeting , Atlanta, Georgia, United States, 4/08/19. https://doi.org/10.1109/PESGM40551.2019.8974055

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abstract = "With increasing penetration of distributed generators (DGs), existing distribution grids are becoming weaker. As a result, voltage regulation in distribution grids impose a significant challenge and can be improved by introducing additional control apparatuses. In this paper, a transformerless static synchronous series compensator (T-SSSC) is adopted to maximise the power transfer between DGs and a weak grid by improving grid voltage stability. A new control strategy is introduced to reduce the number of switching events during the operation of a T-SSSC, thus limiting the switching losses. Furthermore, a new droop based control scheme is proposed to minimise the voltage unbalance between phases. A medium voltage distribution grid with embedded T-SSSCs modelled in Simulink has been used to verify the effectiveness of the proposed control schemes. For completeness, the performance a T-SSSC is investigated following a sudden change in grid short circuit level.",

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N2 - With increasing penetration of distributed generators (DGs), existing distribution grids are becoming weaker. As a result, voltage regulation in distribution grids impose a significant challenge and can be improved by introducing additional control apparatuses. In this paper, a transformerless static synchronous series compensator (T-SSSC) is adopted to maximise the power transfer between DGs and a weak grid by improving grid voltage stability. A new control strategy is introduced to reduce the number of switching events during the operation of a T-SSSC, thus limiting the switching losses. Furthermore, a new droop based control scheme is proposed to minimise the voltage unbalance between phases. A medium voltage distribution grid with embedded T-SSSCs modelled in Simulink has been used to verify the effectiveness of the proposed control schemes. For completeness, the performance a T-SSSC is investigated following a sudden change in grid short circuit level.

AB - With increasing penetration of distributed generators (DGs), existing distribution grids are becoming weaker. As a result, voltage regulation in distribution grids impose a significant challenge and can be improved by introducing additional control apparatuses. In this paper, a transformerless static synchronous series compensator (T-SSSC) is adopted to maximise the power transfer between DGs and a weak grid by improving grid voltage stability. A new control strategy is introduced to reduce the number of switching events during the operation of a T-SSSC, thus limiting the switching losses. Furthermore, a new droop based control scheme is proposed to minimise the voltage unbalance between phases. A medium voltage distribution grid with embedded T-SSSCs modelled in Simulink has been used to verify the effectiveness of the proposed control schemes. For completeness, the performance a T-SSSC is investigated following a sudden change in grid short circuit level.

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KW - short circuit ratio

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PB - IEEE

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ER -

Voltage Regulation in Weak Distribution Grids Using Transformerless Series Compensators

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

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