Grid-Connected Inverter Anti-Islanding Test Results for General Electric Inverter-Based Interconnection Technology

Ye, Z.; Dame, Mark; Kroposki, Benjamin

doi:10.2172/15011440

Cited by 16 publications

(17 citation statements)

References 2 publications

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“…Hence, it is very likely that the anti-islanding protection would operation on under/over frequency or rate of change of frequency (ROCOF) protection. Failing those modes of protection, active anti-islanding methods such as vector shift will likely remove any non-detection zones [21], [22], [23].…”

Section: Discussionmentioning

confidence: 99%

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Over-voltage mitigation within distribution networks with a high renewable distributed generation penetration

Kennedy

Ciufo

Agalgaonkar

2014

2014 IEEE International Energy Conference (ENERGYCON)

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The rapid growth of grid-connected distributed generation has increased the likelihood of over-voltage occurrences in distribution networks. In recent times, much research has taken place in order to develop a control strategy to mitigate the voltage rise problem. However, most of the published strategies require retuning when additional resources are connected, or have a strong dependence on network parameters, such as fault level. This paper proposes a novel over-voltage mitigation scheme that has many advantages not observed in literature. Firstly, the control scheme can integrate with an existing feeder in a plug-and-play fashion. No prior analysis is necessary to configure the control parameters; all required information is measured locally. Secondly, the control scheme is a simple extension upon constant power control which is common in most grid-connected inverter interfaces. Finally, the proposed over-voltage mitigation scheme enforces a fair and equitable power flow allocation. The scheme contains a predefined point of convergence for any voltage magnitude measured at the point of common coupling. Many control schemes operate in a perturb and observe manner which can inadvertently allow certain DG units to export a disproportionate amount of power with respect to other DG units. This paper also details a methodology for analysing the cost effectiveness of any given DG configuration utilising the proposed over-voltage mitigation scheme. The analysis is useful for determining whether a network infrastructure upgrade may be necessary as power curtailment becomes more prevalent within a distribution network. 2014 IEEE. Abstract-The rapid growth of grid-connected distributed generation has increased the likelihood of over-voltage occurrences in distribution networks. In recent times, much research has taken place in order to develop a control strategy to mitigate the voltage rise problem. However, most of the published strategies require re-tuning when additional resources are connected, or have a strong dependence on network parameters, such as fault level. This paper proposes a novel over-voltage mitigation scheme that has many advantages not observed in literature. Firstly, the control scheme can integrate with an existing feeder in a plugand-play fashion. No prior analysis is necessary to configure the control parameters; all required information is measured locally. Secondly, the control scheme is a simple extension upon constant power control which is common in most grid-connected inverter interfaces. Finally, the proposed over-voltage mitigation scheme enforces a fair and equitable power flow allocation. The scheme contains a predefined point of convergence for any voltage magnitude measured at the point of common coupling. Many control schemes operate in a perturb and observe manner which can inadvertently allow certain DG units to export a disproportionate amount of power with respect to other DG units. This paper also details a methodology for analysing the cost effectiveness of any given D...

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Section: Discussionmentioning

confidence: 99%

“…Once the algorithm for determining the steady-state value of a DG unit has been completed, a simple cost analysis can be undertaken using (22). Where L and R are the total loss ($) and pay rate ($/kWh) respectively and P (t) in the power loss across time (kW).…”

Section: Steady-state Load Flow Modelling Incorporating the Ov MImentioning

confidence: 99%

Over-voltage mitigation within distribution networks with a high renewable distributed generation penetration

Kennedy

Ciufo

Agalgaonkar

2014

2014 IEEE International Energy Conference (ENERGYCON)

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“…According to comprehensive reports on anti-islanding technology, there is no form of non-communications or utility based anti-islanding protection without a non-detection zone (NDZ) [16,17]. In practice, however, the risks of most NDZs being realised are very small.…”

Section: Anti-islanding Protectionmentioning

confidence: 99%

“…A plethora of different anti-islanding methods have been proposed and assessed [16,17]. The operational characteristics of an island that are required to prevent islanding detection within two seconds cannot be achieved with contemporary EG penetration sizes and limitations stipulated by utilities [18].…”

Section: Anti-islanding Protectionmentioning

confidence: 99%

A review of protection systems for distribution networks embedded with renewable generation

Kennedy

Ciufo

Agalgaonkar

2016

Renewable and Sustainable Energy Reviews

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The rapid growth of grid-connected embedded generation is changing the operational characteristics of power distribution networks. Amongst a range of issues being reported in the research, the effect of these changes on so-called 'traditional protection systems' has not gone without attention. Looking to the future, the possibility of microgrid systems and deliberate islanding of sections of the network will require highly flexible distribution management systems and a re-design of protection strategies. This paper explores the envisaged protection issues concerned with large penetrations of embedded generation in distribution networks extending into auto-reclosure and protection device coordination. A critical review of recently reported protection strategies for grid-connected only and microgrid operation is also undertaken. The outcome is a list of recommendations to achieve microgrid protection adequacy in future networks. AbstractThe rapid growth of grid-connected embedded generation is changing the operational characteristics of power distribution networks. Amongst a range of issues being reported in the research, the effect of these changes on so-called 'traditional protection systems' has not gone without attention. Looking to the future, the possibility of microgrid systems and deliberate islanding of sections of the network will require highly flexible distribution management systems and a re-design of protection strategies.This paper explores the envisaged protection issues concerned with large penetrations of embedded generation in distribution networks extending into auto-reclosure and protection device coordination. A critical review of recently reported protection strategies for grid-connected only and microgrid operation is also undertaken. The outcome is a list of recommendations to * Corresponding author Tel. +61 2 42392397 NOTICE: this is the authors' version of a work that was accepted for publication. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. achieve microgrid protection adequacy in future networks.

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“…The main advantage of active techniques over passive techniques is their small NDZs. However, the main drawbacks of these methods are that the injected disturbances may reduce the power quality at the point of common coupling (PCC) [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Fuzzy positive feedback for islanding mode detection in distributed generation

Aguiar

Bastos

Neves

et al. 2013

2013 IEEE Power &Amp; Energy Society General Meeting

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This paper proposes a fuzzy voltage and frequency positive feedback (PF) for islanding detection in distributed generation system (DG). The proposed method is based on positive feedback in dq synchronous frame and the design methodology of the fuzzy detection is based on fuzzy inference rules. The main idea is to reduce the injection of disturbances at the point of common coupling (PCC) during the grid-connected operation. A comparison between the fuzzy algorithm and the classical methods are done. The simulation results demonstrate the effectiveness of the proposed approach.

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Grid-Connected Inverter Anti-Islanding Test Results for General Electric Inverter-Based Interconnection Technology

Cited by 16 publications

References 2 publications

Over-voltage mitigation within distribution networks with a high renewable distributed generation penetration

Over-voltage mitigation within distribution networks with a high renewable distributed generation penetration

A review of protection systems for distribution networks embedded with renewable generation

Fuzzy positive feedback for islanding mode detection in distributed generation

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