Advanced inverter controls for distributed resources

Dugan, R.C.; Sunderman, Wes; Seal, Brian

doi:10.1049/cp.2013.1126

Cited by 14 publications

(5 citation statements)

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“…Atualmente, os sistemas fotovoltaicos típicos e instalados no passado recente em residências dispõem de inversores de frequência com o objetivo de alimentar a rede elétrica em operação unidirecional. Ou seja, convertem a energia em modo de corrente contínua dos módulos fotovoltaicos para alternada e desligam-se automaticamente ao detectar distúrbios na rede, tais como flutuação de tensão e frequência (Dugan, 2013).…”

Section: Smart Inverters E Controles Volt-var E Volt-wattunclassified

Avaliação De Desempenho De Tecnologias Emergentes Para Controle De Tensão Em Redes De Distribuição Com Elevada Penetração De Microgeração Fotovoltaica / Performance Evaluation of Emerging Technologies for Voltage Control in Distribution Networks With High Photovoltaic Microgeneration Penetration

Lopes

Vieira

Silva

et al. 2021

BJD

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In the current scenario, the increasing penetration of microphotovoltaic distributed generation (MPVDG) in the low voltage distribution networks (LVDNs) has caused technical problems, such as reverse power flow, voltage fluctuation and overvoltage. The overvoltage issue occurs due to the high LVDN R/X ratios of cables associated with active power injection by MPVDG. Such problems, in turn, have generated financial losses for both utilities and residential consumers. In the technical literature, emerging technologies and equipment, such as smart inverters with advanced Volt-VAr and Volt-Watt functions and battery energy storage systems (BESS), rise as potential solutions to mitigate the mentioned problems. This article comparatively evaluates the performance of Volt-VAr and Volt-Watt control techniques and a residential BESS charge/discharge control, highlighting the potential and limitations of each technique. The simulations are performed in a real LVDN. Time-series power flow simulations evaluate the mitigation techniques.

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Section: Smart Inverters E Controles Volt-var E Volt-wattunclassified

Avaliação De Desempenho De Tecnologias Emergentes Para Controle De Tensão Em Redes De Distribuição Com Elevada Penetração De Microgeração Fotovoltaica / Performance Evaluation of Emerging Technologies for Voltage Control in Distribution Networks With High Photovoltaic Microgeneration Penetration

Lopes

Vieira

Silva

et al. 2021

BJD

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“…Due to fluctuating injection of power (solar and wind power are not constant), the need for automated solutions is growing, which implies that (even automated) OLTCs are no longer sufficient. Using these DERs to compensate for low or high voltage is one of the most commonly discussed methods [6,7,[25][26][27][28][29][30].…”

Section: Active and Reactive Power Compensation Using Invertersmentioning

confidence: 99%

Impact of advanced inverter functions on low‐voltage power grids

Mentens

Chamorro

Jacobs

et al. 2021

IET Energy Syst Integration

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In today's power grid, a great number of inverter-based distributed energy resources (DERs) are connected and are mainly designed to supply power without considering the voltage and frequency deviations of the grid. Therefore, distribution system operators (DSOs) are challenged with an increase in grid events because of the random implementation of DERs. Voltage levels can vary beyond predefined limits at the point of connection and are currently not evaluated by DSOs. Summarized here is the development of a simulation model for evaluating the impact of support functions integrated in inverter-based DERs. The model aims to help grid operators simulate voltage and frequency events and study the impact of DERs to the grid with respect to different settings of integrated support functions. A model is developed in MATLAB/Simulink conforming to European standards and regulations. Grid dynamics can be evaluated by imitating voltage and frequency deviations. Support functions can be either adjusted according to the situation or turned off. Together with adjustable settings according to DSO request, this model offers flexibility and insight in the capabilities of DERs to solve voltage and frequency issues. Case studies show that the model corresponds to expected behaviour and can be used for further development.

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“…4, inspired of Ref. [44], and firstly introduced in [15]. The reactive power adjustment is aimed at counteracting overvoltages when V tm exceeds V 3 .…”

Section: A Mode A: Normal Operating Conditionsmentioning

confidence: 99%

Active Management of Low-Voltage Networks for Mitigating Overvoltages Due to Photovoltaic Units

Frédéric

Aristidou

Ernst

et al. 2016

IEEE Trans. Smart Grid

277

164

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Abstract-In this paper, the overvoltage problems that might arise from the integration of photovoltaic panels into low-voltage distribution networks is addressed. A distributed scheme is proposed that adjusts the reactive and active power output of inverters to prevent or alleviate such problems. The proposed scheme is model-free and makes use of limited communication between the controllers, in the form of a distress signal, only during emergency conditions. It prioritizes the use of reactive power, while active power curtailment is performed only as a last resort. The behavior of the scheme is studied using dynamic simulations on a single low-voltage feeder and on a larger network composed of 14 low-voltage feeders. Its performance is compared to a centralized scheme based on the solution of an Optimal Power Flow problem, whose objective function is to minimize the active power curtailment. The proposed scheme successfully mitigates overvoltage situations due to high photovoltaic penetration and performs almost as well as the Optimal Power Flow based solution with significantly less information and communication requirements.Index Terms-low-voltage photovoltaic systems, active distribution network management, voltage control

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Advanced inverter controls for distributed resources

Cited by 14 publications

References 0 publications

Impact of advanced inverter functions on low‐voltage power grids

Active Management of Low-Voltage Networks for Mitigating Overvoltages Due to Photovoltaic Units

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