Coordinated active and reactive power control for overvoltage mitigation in physical LV microgrids

Thanh Mai; Niyam Haque; Thai Hau Vo; Phuong Nguyen

doi:10.1049/joe.2018.9355

Coordinated active and reactive power control for overvoltage mitigation in physical LV microgrids

Thanh Mai (Corresponding author), Niyam Haque, Thai Hau Vo, Phuong Nguyen

Electrical Energy Systems

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

The share of photovoltaic (PV) systems in the distribution networks is rapidly growing, leading to the common issue of overvoltage at the end of distribution feeders during the periods when peak generation is surplus to consumption. In this study, a hierarchical control is proposed to mitigate overvoltage at the point of connection of PV systems in physical low-voltage
microgrids. The proposed mechanism is comprised of primary and secondary control layers to tackle the overvoltage problems given the communication capability is available. This mechanism employs a multi-objective optimisation approach to effectively coordinate curtailed active power and absorbed reactive power of the PV inverters with the aim of minimising the active power curtailment. The feasibility of the proposed control approach is successfully verified through simulations on a simplified LV network.

Original language	English
Pages (from-to)	5007-5011
Number of pages	5
Journal	Journal of Engineering
Volume	2019
Issue number	18
DOIs	https://doi.org/10.1049/joe.2018.9355
Publication status	Published - 10 Jan 2019

Keywords

LV network
PV inverters
PV systems
active power curtailment
coordinated reactive power control
distributed power generation
distribution feeders
distribution networks
hierarchical control
hierarchical systems
invertors
low-voltage microgrids
multiobjective optimisation approach
optimal control
optimisation
overvoltage mitigation
overvoltage protection
photovoltaic power systems
photovoltaic systems
physical LV microgrids
power generation control
primary control layers
reactive power control
secondary control layers

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title = "Coordinated active and reactive power control for overvoltage mitigation in physical LV microgrids",

abstract = "The share of photovoltaic (PV) systems in the distribution networks is rapidly growing, leading to the common issue of overvoltage at the end of distribution feeders during the periods when peak generation is surplus to consumption. In this study, a hierarchical control is proposed to mitigate overvoltage at the point of connection of PV systems in physical low-voltagemicrogrids. The proposed mechanism is comprised of primary and secondary control layers to tackle the overvoltage problems given the communication capability is available. This mechanism employs a multi-objective optimisation approach to effectively coordinate curtailed active power and absorbed reactive power of the PV inverters with the aim of minimising the active power curtailment. The feasibility of the proposed control approach is successfully verified through simulations on a simplified LV network.",

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author = "Thanh Mai and Niyam Haque and Vo, {Thai Hau} and Phuong Nguyen",

year = "2019",

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doi = "10.1049/joe.2018.9355",

language = "English",

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T1 - Coordinated active and reactive power control for overvoltage mitigation in physical LV microgrids

AU - Mai, Thanh

AU - Haque, Niyam

AU - Vo, Thai Hau

AU - Nguyen, Phuong

PY - 2019/1/10

Y1 - 2019/1/10

N2 - The share of photovoltaic (PV) systems in the distribution networks is rapidly growing, leading to the common issue of overvoltage at the end of distribution feeders during the periods when peak generation is surplus to consumption. In this study, a hierarchical control is proposed to mitigate overvoltage at the point of connection of PV systems in physical low-voltagemicrogrids. The proposed mechanism is comprised of primary and secondary control layers to tackle the overvoltage problems given the communication capability is available. This mechanism employs a multi-objective optimisation approach to effectively coordinate curtailed active power and absorbed reactive power of the PV inverters with the aim of minimising the active power curtailment. The feasibility of the proposed control approach is successfully verified through simulations on a simplified LV network.

AB - The share of photovoltaic (PV) systems in the distribution networks is rapidly growing, leading to the common issue of overvoltage at the end of distribution feeders during the periods when peak generation is surplus to consumption. In this study, a hierarchical control is proposed to mitigate overvoltage at the point of connection of PV systems in physical low-voltagemicrogrids. The proposed mechanism is comprised of primary and secondary control layers to tackle the overvoltage problems given the communication capability is available. This mechanism employs a multi-objective optimisation approach to effectively coordinate curtailed active power and absorbed reactive power of the PV inverters with the aim of minimising the active power curtailment. The feasibility of the proposed control approach is successfully verified through simulations on a simplified LV network.

KW - LV network

KW - PV inverters

KW - PV systems

KW - active power curtailment

KW - coordinated reactive power control

KW - distributed power generation

KW - distribution feeders

KW - distribution networks

KW - hierarchical control

KW - hierarchical systems

KW - invertors

KW - low-voltage microgrids

KW - multiobjective optimisation approach

KW - optimal control

KW - optimisation

KW - overvoltage mitigation

KW - overvoltage protection

KW - photovoltaic power systems

KW - photovoltaic systems

KW - physical LV microgrids

KW - power generation control

KW - primary control layers

KW - reactive power control

KW - secondary control layers

U2 - 10.1049/joe.2018.9355

DO - 10.1049/joe.2018.9355

M3 - Article

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JO - Journal of Engineering

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