Flexible Operation of Grid-Interactive Converters under Unbalanced Grid Conditions

Fotouhi, Mohammad Ali; Vale, Zita; Castro, Rui; Pinto, Sónia; Silva, Fernando

doi:10.14257/astl.2015.97.01

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…Even though flexible positive-and negative-sequence power control strategy is applied in [50], [55], [56], the k p -k q joint strategies reported in these studies also exhibit some features related to power-characteristic-oriented control strategies, which suggests that there may be a relationship between different flexible control strategies. In [56], the joint strategy can be either This article has been accepted for publication in a future issue of this journal, but has not been fully edited.…”

Section: E Relationship Between Flexible Control Strategiesmentioning

confidence: 84%

“…In [56], the joint strategy can be either This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication.…”

Section: E Relationship Between Flexible Control Strategiesmentioning

confidence: 99%

“…is selected in (56). With semi-flexible positive-and negativesequence reactive power control in [48], the expression of max{I m } as a function of Q ref and k q is derived.…”

Section: Converter Current Limitmentioning

confidence: 99%

See 2 more Smart Citations

A Review on Grid-Connected Converter Control for Short-Circuit Power Provision Under Grid Unbalanced Faults

Jia

Yang

Nielsen

2018

IEEE Trans. Power Delivery

160

115

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Abstract-As an increasing amount of converter-based generation on power electronics is connected to power systems, transmission system operators (TSOs) are revising the grid connection requirements to streamline the connectivity of the devices to maintain security of supply. Converter-based generation can behave significantly different from the traditional alternators under grid faults. In order to evaluate the potential impact of future converter-based power systems on protective relays, it is necessary to consider diverse current control strategies of voltage source converters (VSC) under unbalanced faults as the performance of converters primarily depends on their control objectives. In this paper, current control strategies of VSC under unbalanced faults for short circuit power provision are reviewed in two groups, namely power-characteristic-oriented and voltage-support-oriented control strategy respectively. As the fault current provided by converters should be restricted within secure operation limits considering semiconductor capabilities, converter current limit issue is also discussed.

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Section: E Relationship Between Flexible Control Strategiesmentioning

confidence: 84%

Section: E Relationship Between Flexible Control Strategiesmentioning

confidence: 99%

See 1 more Smart Citation

A Review on Grid-Connected Converter Control for Short-Circuit Power Provision Under Grid Unbalanced Faults

Jia

Yang

Nielsen

2018

IEEE Trans. Power Delivery

160

115

View full text Add to dashboard Cite

show abstract

“…It is suggested in [16] the two coefficients have the same sign so that = = (0 ≤ ≤ 1), which has the capability of reducing oscillating active and reactive power at the same time.…”

Section: ) Flexible Positive-and Negative-sequence Powermentioning

confidence: 99%

Investigation of grid-connected voltage source converter performance under unbalanced faults

Jia

Yang

Nielsen

2016

2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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Abstract-Renewable energy sources (RES) and HVDC links are typically interfaced with the grid by power converters, whose performance during grid faults is significantly different from that of traditional synchronous generators. This paper investigates the performance of grid-connected voltage source converters (VSCs) under unbalanced faults. Conventional positive-sequence synchronous reference frame (SRF) control is presented first, followed by three different negative-sequence current control strategies considering reactive power injection and converter current limit. The simulation results indicate that the performance of VSCs varies with their control strategies. Negative-sequence current control is necessary to restrict converter current in each phase under unbalanced faults. Among presented control strategies, the balanced current control strategy complies with the present voltage support requirement best and further requirements should be specified if a set of controlled unbalanced current is expected under unbalanced faults.

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Control of Grid Connected Converters Under Unbalanced Grid Faults

Pal¹,

Mishra

Verma

et al. 2018

2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)

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Flexible Operation of Grid-Interactive Converters under Unbalanced Grid Conditions

Cited by 3 publications

References 9 publications

A Review on Grid-Connected Converter Control for Short-Circuit Power Provision Under Grid Unbalanced Faults

A Review on Grid-Connected Converter Control for Short-Circuit Power Provision Under Grid Unbalanced Faults

Investigation of grid-connected voltage source converter performance under unbalanced faults

Control of Grid Connected Converters Under Unbalanced Grid Faults

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