Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain Strategy

The large-scale integration of rooftop PVs stalls due to the voltage limit violations they provoke, the uncontrolled reactive power flow in the superordinate grids and the information and communications technology (ICT) related challenges that arise in solving the voltage limit violation problem. Th...

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Main Authors: Daniel-Leon Schultis, Albana Ilo
Format: Article
Language:English
Published: MDPI AG 2019-10-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/20/3865
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author Daniel-Leon Schultis
Albana Ilo
author_facet Daniel-Leon Schultis
Albana Ilo
author_sort Daniel-Leon Schultis
collection DOAJ
description The large-scale integration of rooftop PVs stalls due to the voltage limit violations they provoke, the uncontrolled reactive power flow in the superordinate grids and the information and communications technology (ICT) related challenges that arise in solving the voltage limit violation problem. This paper attempts to solve these issues using the <i>LINK</i>-based holistic architecture, which takes into account the behaviour of the entire power system, including customer plants. It focuses on the analysis of the behaviour of distribution grids with the highest PV share, leading to the determination of the structure of the Volt/var control chain. The voltage limit violations in low voltage grid and the ICT challenge are solved by using concentrated reactive devices at the end of low voltage feeders. <i>Q</i>-Autarkic customer plants relieve grids from the load-related reactive power. The optimal arrangement of the compensation devices is determined by a series of simulations. They are conducted in a common model of medium and low voltage grids. Results show that the best performance is achieved by placing compensation devices at the secondary side of the supplying transformer. The Volt/var control chain consists of two Volt/var secondary controls; one at medium voltage level (which also controls the TSO-DSO reactive power exchange), the other at the customer plant level.
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spelling doaj.art-66ffaa217ba6483ea463b253f3153b9a2022-12-22T02:20:40ZengMDPI AGEnergies1996-10732019-10-011220386510.3390/en12203865en12203865Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain StrategyDaniel-Leon Schultis0Albana Ilo1TU Wien—Institute of Energy Systems and Electrical Drives, 1040 Vienna, AustriaTU Wien—Institute of Energy Systems and Electrical Drives, 1040 Vienna, AustriaThe large-scale integration of rooftop PVs stalls due to the voltage limit violations they provoke, the uncontrolled reactive power flow in the superordinate grids and the information and communications technology (ICT) related challenges that arise in solving the voltage limit violation problem. This paper attempts to solve these issues using the <i>LINK</i>-based holistic architecture, which takes into account the behaviour of the entire power system, including customer plants. It focuses on the analysis of the behaviour of distribution grids with the highest PV share, leading to the determination of the structure of the Volt/var control chain. The voltage limit violations in low voltage grid and the ICT challenge are solved by using concentrated reactive devices at the end of low voltage feeders. <i>Q</i>-Autarkic customer plants relieve grids from the load-related reactive power. The optimal arrangement of the compensation devices is determined by a series of simulations. They are conducted in a common model of medium and low voltage grids. Results show that the best performance is achieved by placing compensation devices at the secondary side of the supplying transformer. The Volt/var control chain consists of two Volt/var secondary controls; one at medium voltage level (which also controls the TSO-DSO reactive power exchange), the other at the customer plant level.https://www.mdpi.com/1996-1073/12/20/3865volt/var controldistribution gridphotovoltaic<i>l</i>(<i>u</i>)-control<i>q</i>-autarkysmart grid
spellingShingle Daniel-Leon Schultis
Albana Ilo
Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain Strategy
Energies
volt/var control
distribution grid
photovoltaic
<i>l</i>(<i>u</i>)-control
<i>q</i>-autarky
smart grid
title Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain Strategy
title_full Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain Strategy
title_fullStr Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain Strategy
title_full_unstemmed Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain Strategy
title_short Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain Strategy
title_sort behaviour of distribution grids with the highest pv share using the volt var control chain strategy
topic volt/var control
distribution grid
photovoltaic
<i>l</i>(<i>u</i>)-control
<i>q</i>-autarky
smart grid
url https://www.mdpi.com/1996-1073/12/20/3865
work_keys_str_mv AT danielleonschultis behaviourofdistributiongridswiththehighestpvshareusingthevoltvarcontrolchainstrategy
AT albanailo behaviourofdistributiongridswiththehighestpvshareusingthevoltvarcontrolchainstrategy