Voltage sag influence on controlled three‐phase grid‐connected inverters according to the Spanish grid code

Bakkar, Mostafa; Bogarra, Santiago; Rolán, Alejandro; Córcoles, F.; Saura, Jaume

doi:10.1049/iet-gtd.2019.1496

Cited by 10 publications

(9 citation statements)

References 35 publications

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“…where v abc Ref are the abc components of the reference voltage of the inverter, v g abc are the abc components of the grid voltage, i abc are the injected abc currents from the inverter to the grid and R and L are the resistance and the inductance of the filter, respectively. The authors' previous work [36,37] demonstrated the behaviour of grid-connected converter under grid faults according to the Spanish grid code. The reference positivetransformed currents are imposed directly from grid code by using Equation (2).…”

Section: Impact Of Dg Penetration On the Ds Protectionmentioning

confidence: 99%

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Overcurrent protection based on ANNs for smart distribution networks with grid‐connected VSIs

Bakkar¹,

Bogarra²,

Córcoles³

et al. 2020

IET Generation Trans & Dist

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Recently, the global concern for protection coordination is growing with the impact of distributed generators connected to medium voltage distribution system. Effective protection strategies need to be developed in order to avoid undesirable tripping when distributed generators based on Voltage Source Inverters are connected to the medium voltage grid. According to Spanish grid code requirements, the inverter controller response in this paper is assessed under grid faults integrating low voltage ride through capabilities. This paper presents a novel use of a communication‐based directional relay system with artificial neural network, an appropriate option for smart grids protection. A protection strategy is proposed using two algorithms. The first algorithm is based on gathering data of all the protective devices in the grid and send it to a centralized controller. The second algorithm is based on a zone controller using the communication between the peer protection devices in the same line. One of the main advantages of the zone controller is that no need to modify the protection devices setting in case of temporary grid reconfigurations. The behaviour of the protection algorithms is validated through both simulations in MATLAB‐Simulink and experimental results.

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Section: Impact Of Dg Penetration On the Ds Protectionmentioning

confidence: 99%

“…The authors’ previous work [36, 37] demonstrated the behaviour of grid‐connected converter under grid faults according to the Spanish grid code. The reference positive‐transformed currents are imposed directly from grid code by using Equation (2).…”

Section: Impact Of Dg Penetration On the Ds Protectionmentioning

confidence: 99%

Overcurrent protection based on ANNs for smart distribution networks with grid‐connected VSIs

Bakkar¹,

Bogarra²,

Córcoles³

et al. 2020

IET Generation Trans & Dist

Self Cite

View full text Add to dashboard Cite

show abstract

“…Regarding grid-connected inverters operating under unbalanced voltage conditions, the most common approach is to use a dual current control (DCC) in order to control both positive-and negative-sequence currents [9]. Moreover, current grid codes may also be used in order to inject reactive current for voltage support during grid faults [10], [11].…”

Section: Introductionmentioning

confidence: 99%

A Parametric Approach for the Study of Three-phase Inverters Subject to Grid Faults

Rolán¹,

Sainz²

2022

REPQJ

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The aim of this work is to describe the behavior of three-phase inverters connected to a faulty grid by means of a parametric approach which gives rise to limaçon of Pascal curves and 3D figures formed by the injected currents during the fault. The analytical study is given in the complex form of the transformed Park variables, and the simulation results are obtained by means of MATLABTM. The results show that the parametric analysis can be an easy and useful tool to predict the behavior of three-phase inverters operating under voltage sags, with the aim of achieving fault ride-through (FRT) capability.

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“…The current research efforts in the field of grid codes are focused on compliance tests for different control methods [4,5,6,7] and grid code reviews [8,9] in order to summarize the requirements of several TSOs. Additionally, some researchers focus on market-oriented grid codes studies [10], particularly, the impact of ancillary services provision and retribution strategies to secure the necessary amount of support to ensure grid stability during disturbances, and the various methods to incentivise WPPs.…”

Section: Introductionmentioning

confidence: 99%

Future-oriented generic grid code regarding wind power plants in Europe

Vrana

Attya

Trilla

2021

International Journal of Electrical Power & Energy Systems

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The assessment of compliance with grid codes requirements can be challenging for researchers and (early stage) technology developers. To tackle this problem, a generic grid code is proposed in this article that defines certain requirements aimed for future scenarios with high shares of renewables. The proposed code is not linked to a particular grid of a certain region or country. The requirements are expressed in a mathematical way, in contrast to the legal format of real grid codes, to enable for easier implementation. The parameterised expressions enable for easy customisation for specific use cases. The compliance is assessed through reference under/over voltage test events and a test frequency disturbance, to which desired responses are specified. Detailed dynamic tolerance bands are defined around the desired responses, using linear parameterised functions providing a clear and continuous definition that leaves little room for interpretation. This generic grid code is inspired by the present regulations, especially the European grid code framework (ENTSO-E RfG) and the Irish grid code, which is seen by many as a benchmark regarding wind power integration. However, the generic grid code includes additional requirements that are not commonly part of grid codes today, including requirements covering asymmetric faults and inertia-like response to frequency deviations.

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Voltage sag influence on controlled three‐phase grid‐connected inverters according to the Spanish grid code

Cited by 10 publications

References 35 publications

Overcurrent protection based on ANNs for smart distribution networks with grid‐connected VSIs

Overcurrent protection based on ANNs for smart distribution networks with grid‐connected VSIs

A Parametric Approach for the Study of Three-phase Inverters Subject to Grid Faults

Future-oriented generic grid code regarding wind power plants in Europe

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